diff --git a/src/common/data/EscapeSequences.ts b/src/common/data/EscapeSequences.ts
index 9713f64b..0e034620 100644
--- a/src/common/data/EscapeSequences.ts
+++ b/src/common/data/EscapeSequences.ts
@@ -148,6 +148,6 @@ export namespace C1 {
   /** Application Program Command */
   export const APC = '\x9f';
 }
-export const C1_ESCAPED = {
-  ST: `{C0.ESC}\\`
-};
+export namespace C1_ESCAPED {
+  export const ST = `${C0.ESC}\\`;
+}
diff --git a/test/api/InputHandler.api.ts b/test/api/InputHandler.api.ts
index 4d3a15dd..2981e134 100644
--- a/test/api/InputHandler.api.ts
+++ b/test/api/InputHandler.api.ts
@@ -399,13 +399,13 @@ describe('InputHandler Integration Tests', function(): void {
       });
       it('query single color', async () => {
         await writeSync(page, '\x1b]4;0;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;0;rgb:2e2e/3434/3636\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;0;rgb:2e2e/3434/3636\x1b\\']);
         await writeSync(page, '\x1b]4;77;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;0;rgb:2e2e/3434/3636\x07', '\x1b]4;77;rgb:5f5f/d7d7/5f5f\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;0;rgb:2e2e/3434/3636\x1b\\', '\x1b]4;77;rgb:5f5f/d7d7/5f5f\x1b\\']);
       });
       it('query multiple colors', async () => {
         await writeSync(page, '\x1b]4;0;?;77;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;0;rgb:2e2e/3434/3636\x07', '\x1b]4;77;rgb:5f5f/d7d7/5f5f\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;0;rgb:2e2e/3434/3636\x1b\\', '\x1b]4;77;rgb:5f5f/d7d7/5f5f\x1b\\']);
       });
       it('set & query single color', async () => {
         await writeSync(page, '\x1b]4;0;?\x07');
@@ -413,10 +413,10 @@ describe('InputHandler Integration Tests', function(): void {
         assert.deepEqual(await page.evaluate('window._recordedData'), restore);
         // set new color & query
         await writeSync(page, '\x1b]4;0;rgb:01/02/03\x07\x1b]4;0;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), [restore[0], '\x1b]4;0;rgb:0101/0202/0303\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), [restore[0], '\x1b]4;0;rgb:0101/0202/0303\x1b\\']);
         // restore should set old color
         await writeSync(page, restore[0] + '\x1b]4;0;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), [restore[0], '\x1b]4;0;rgb:0101/0202/0303\x07', restore[0]]);
+        assert.deepEqual(await page.evaluate('window._recordedData'), [restore[0], '\x1b]4;0;rgb:0101/0202/0303\x1b\\', restore[0]]);
       });
       it('query & set colors mixed', async () => {
         await writeSync(page, '\x1b]4;0;?;77;?\x07');
@@ -424,11 +424,11 @@ describe('InputHandler Integration Tests', function(): void {
         await page.evaluate('window._recordedData.length = 0;');
         // mixed call - change 0, query 43, change 77
         await writeSync(page, '\x1b]4;0;rgb:01/02/03;43;?;77;#aabbcc\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;43;rgb:0000/d7d7/afaf\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;43;rgb:0000/d7d7/afaf\x1b\\']);
         await page.evaluate('window._recordedData.length = 0;');
         // query new values for 0 + 77
         await writeSync(page, '\x1b]4;0;?;77;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;0;rgb:0101/0202/0303\x07', '\x1b]4;77;rgb:aaaa/bbbb/cccc\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]4;0;rgb:0101/0202/0303\x1b\\', '\x1b]4;77;rgb:aaaa/bbbb/cccc\x1b\\']);
         await page.evaluate('window._recordedData.length = 0;');
         // restore old values for 0 + 77
         await writeSync(page, restore[0] + restore[1] + '\x1b]4;0;?;77;?\x07');
@@ -451,10 +451,10 @@ describe('InputHandler Integration Tests', function(): void {
           await writeSync(page, `\x1b]4;${i};?\x07`);
           const restore: string[] = await page.evaluate('window._recordedData');
           await writeSync(page, `\x1b]4;${i};rgb:01/02/03\x07\x1b]4;${i};?\x07`);
-          assert.deepEqual(await page.evaluate('window._recordedData'), [restore[0], `\x1b]4;${i};rgb:0101/0202/0303\x07`]);
+          assert.deepEqual(await page.evaluate('window._recordedData'), [restore[0], `\x1b]4;${i};rgb:0101/0202/0303\x1b\\`]);
           // restore slot color
           await writeSync(page, `\x1b]104;${i}\x07\x1b]4;${i};?\x07`);
-          assert.deepEqual(await page.evaluate('window._recordedData'), [restore[0], `\x1b]4;${i};rgb:0101/0202/0303\x07`, restore[0]]);
+          assert.deepEqual(await page.evaluate('window._recordedData'), [restore[0], `\x1b]4;${i};rgb:0101/0202/0303\x1b\\`, restore[0]]);
           await page.evaluate('window._recordedData.length = 0;');
         }
       });
@@ -491,62 +491,62 @@ describe('InputHandler Integration Tests', function(): void {
       });
       it('query FG color', async () => {
         await writeSync(page, '\x1b]10;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:ffff/ffff/ffff\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:ffff/ffff/ffff\x1b\\']);
       });
       it('query BG color', async () => {
         await writeSync(page, '\x1b]11;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:0000/0000/0000\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:0000/0000/0000\x1b\\']);
       });
       it('query FG & BG color in one call', async () => {
         await writeSync(page, '\x1b]10;?;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:ffff/ffff/ffff\x07', '\x1b]11;rgb:0000/0000/0000\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:ffff/ffff/ffff\x1b\\', '\x1b]11;rgb:0000/0000/0000\x1b\\']);
       });
       it('set & query FG', async () => {
         await writeSync(page, '\x1b]10;rgb:1/2/3\x07\x1b]10;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:1111/2222/3333\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:1111/2222/3333\x1b\\']);
         await writeSync(page, '\x1b]10;#ffffff\x07\x1b]10;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:1111/2222/3333\x07', '\x1b]10;rgb:ffff/ffff/ffff\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:1111/2222/3333\x1b\\', '\x1b]10;rgb:ffff/ffff/ffff\x1b\\']);
       });
       it('set & query BG', async () => {
         await writeSync(page, '\x1b]11;rgb:1/2/3\x07\x1b]11;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:1111/2222/3333\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:1111/2222/3333\x1b\\']);
         await writeSync(page, '\x1b]11;#000000\x07\x1b]11;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:1111/2222/3333\x07', '\x1b]11;rgb:0000/0000/0000\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:1111/2222/3333\x1b\\', '\x1b]11;rgb:0000/0000/0000\x1b\\']);
       });
       it('set & query cursor color', async () => {
         await writeSync(page, '\x1b]12;rgb:1/2/3\x07\x1b]12;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]12;rgb:1111/2222/3333\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]12;rgb:1111/2222/3333\x1b\\']);
         await writeSync(page, '\x1b]12;#ffffff\x07\x1b]12;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]12;rgb:1111/2222/3333\x07', '\x1b]12;rgb:ffff/ffff/ffff\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]12;rgb:1111/2222/3333\x1b\\', '\x1b]12;rgb:ffff/ffff/ffff\x1b\\']);
       });
       it('set & query FG & BG color in one call', async () => {
         await writeSync(page, '\x1b]10;#123456;rgb:aa/bb/cc\x07\x1b]10;?;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:1212/3434/5656\x07', '\x1b]11;rgb:aaaa/bbbb/cccc\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:1212/3434/5656\x1b\\', '\x1b]11;rgb:aaaa/bbbb/cccc\x1b\\']);
         await writeSync(page, '\x1b]10;#ffffff;#000000\x07');
       });
       it('OSC 110: restore FG color', async () => {
         await writeSync(page, '\x1b]10;rgb:1/2/3\x07\x1b]10;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:1111/2222/3333\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:1111/2222/3333\x1b\\']);
         await page.evaluate('window._recordedData.length = 0;');
         // restore
         await writeSync(page, '\x1b]110\x07\x1b]10;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:ffff/ffff/ffff\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]10;rgb:ffff/ffff/ffff\x1b\\']);
       });
       it('OSC 111: restore BG color', async () => {
         await writeSync(page, '\x1b]11;rgb:1/2/3\x07\x1b]11;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:1111/2222/3333\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:1111/2222/3333\x1b\\']);
         await page.evaluate('window._recordedData.length = 0;');
         // restore
         await writeSync(page, '\x1b]111\x07\x1b]11;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:0000/0000/0000\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]11;rgb:0000/0000/0000\x1b\\']);
       });
       it('OSC 112: restore cursor color', async () => {
         await writeSync(page, '\x1b]12;rgb:1/2/3\x07\x1b]12;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]12;rgb:1111/2222/3333\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]12;rgb:1111/2222/3333\x1b\\']);
         await page.evaluate('window._recordedData.length = 0;');
         // restore
         await writeSync(page, '\x1b]112\x07\x1b]12;?\x07');
-        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]12;rgb:ffff/ffff/ffff\x07']);
+        assert.deepEqual(await page.evaluate('window._recordedData'), ['\x1b]12;rgb:ffff/ffff/ffff\x1b\\']);
       });
     });
   });