diff --git a/Source/WTF/wtf/text/StringImpl.h b/Source/WTF/wtf/text/StringImpl.h
index 7b86caa467b85..11989c7625e20 100644
--- a/Source/WTF/wtf/text/StringImpl.h
+++ b/Source/WTF/wtf/text/StringImpl.h
@@ -178,7 +178,7 @@ DECLARE_COMPACT_ALLOCATOR_WITH_HEAP_IDENTIFIER(StringImpl);
 
 class StringImpl : private StringImplShape {
     WTF_MAKE_NONCOPYABLE(StringImpl);
-    WTF_MAKE_FAST_COMPACT_ALLOCATED_WITH_HEAP_IDENTIFIER(WTF::StringImpl);
+    WTF_MAKE_FAST_COMPACT_ALLOCATED_WITH_HEAP_IDENTIFIER(StringImpl);
 
     friend class AtomStringImpl;
     friend class JSC::LLInt::Data;