diff --git a/tools/llvm2cpp/Makefile b/tools/llvm2cpp/Makefile
index 88db590c9bf..f9c8aec24c9 100644
--- a/tools/llvm2cpp/Makefile
+++ b/tools/llvm2cpp/Makefile
@@ -13,4 +13,4 @@ REQUIRES_EH := 1
 
 include $(LEVEL)/Makefile.common
 
-CompileCommonOpts := $(filter-out -pedantic,$(CompileCommonOpts))
+CompileCommonOpts := $(CompileCommonOpts) -Wno-format