diff --git a/tools/lto/LTOModule.cpp b/tools/lto/LTOModule.cpp
index e329d50..c7cd585 100644
--- a/tools/lto/LTOModule.cpp
+++ b/tools/lto/LTOModule.cpp
@@ -356,7 +356,7 @@
 
 void LTOModule::addAsmGlobalSymbol(const char *name) {
   // only add new define if not already defined
-  if (_defines.count(name) == 0)
+  if (_defines.count(name))
     return;
 
   // string is owned by _defines