diff --git a/ipc/testshell/XPCShellEnvironment.cpp b/ipc/testshell/XPCShellEnvironment.cpp
index f0c8a859412..8060610d004 100644
--- a/ipc/testshell/XPCShellEnvironment.cpp
+++ b/ipc/testshell/XPCShellEnvironment.cpp
@@ -414,14 +414,6 @@ GC(JSContext *cx,
     preBytes = JS_GetGCParameter(rt, JSGC_BYTES);
     JS_GC(cx);
     postBytes = JS_GetGCParameter(rt, JSGC_BYTES);
-    fprintf(stdout, "before %lu, after %lu, break %08lx\n",
-           (unsigned long)preBytes, (unsigned long)postBytes,
-#ifdef XP_UNIX
-           (unsigned long)sbrk(0)
-#else
-           0
-#endif
-           );
 #ifdef JS_GCMETER
     js_DumpGCStats(rt, stdout);
 #endif