diff --git a/mozglue/build/TsanOptions.cpp b/mozglue/build/TsanOptions.cpp
index 100f7506f9bb..922518abf381 100644
--- a/mozglue/build/TsanOptions.cpp
+++ b/mozglue/build/TsanOptions.cpp
@@ -240,10 +240,6 @@ extern "C" const char* __tsan_default_suppressions() {
          // Bug 1615569
          "race:mp_exptmod.max_window_bits\n"
 
-         // Bug 1642906
-         "race:EnsurePerformanceCounter\n"
-         "race:GetPerformanceCounter\n"
-
          // ~GLContextGLX unlocks a libGL mutex that cannot be seen
          // by TSan because libGL is not instrumented.
          "mutex:GLContextGLX::~GLContextGLX\n"