diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index 51db411d6b4..548895e0a58 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1907,11 +1907,6 @@ pref("browser.reader.detectedFirstArticle", false);
 // Don't limit how many nodes we care about on desktop:
 pref("reader.parse-node-limit", 0);
 
-// Enable Service workers for desktop on non-release builds
-#ifdef NIGHTLY_BUILD
-pref("dom.serviceWorkers.enabled", true);
-#endif
-
 pref("browser.pocket.enabled", true);
 pref("browser.pocket.api", "api.getpocket.com");
 pref("browser.pocket.site", "getpocket.com");
diff --git a/mobile/android/app/mobile.js b/mobile/android/app/mobile.js
index 5829c47fe10..f2ba3e8e067 100644
--- a/mobile/android/app/mobile.js
+++ b/mobile/android/app/mobile.js
@@ -873,8 +873,3 @@ pref("toolkit.telemetry.unified", false);
 
 // Selection carets never fall-back to internal LongTap detector.
 pref("selectioncaret.detects.longtap", false);
-
-// Enable Service workers for Android on non-release builds
-#ifdef NIGHTLY_BUILD
-pref("dom.serviceWorkers.enabled", true);
-#endif