diff --git a/cc/config/clang.go b/cc/config/clang.go
index 08c638d00..4ec787f53 100644
--- a/cc/config/clang.go
+++ b/cc/config/clang.go
@@ -175,10 +175,6 @@ func init() {
 
 		// Disable this warning because we don't care about behavior with older compilers.
 		"-Wno-return-std-move-in-c++11",
-
-		// Disable -Wstring-plus-int until the instances detected by this new warning is
-		// fixed.
-		"-Wno-string-plus-int",
 	}, " "))
 
 	// Extra cflags for projects under external/ directory