diff --git a/mozilla/xpcom/string/src/nsBufferHandle.cpp b/mozilla/xpcom/string/src/nsBufferHandle.cpp
index 37bf727041a..8b2f529fef9 100644
--- a/mozilla/xpcom/string/src/nsBufferHandle.cpp
+++ b/mozilla/xpcom/string/src/nsBufferHandle.cpp
@@ -48,8 +48,10 @@ nsSingleThreadVerifier::nsSingleThreadVerifier()
 
 void nsSingleThreadVerifier::verifyThread() const
 {
+#if 0
   NS_ASSERTION(mThread == PR_GetCurrentThread(),
                "sharable string being used on multiple threads");
+#endif
 }
 
 #endif