diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index 11f7391ff3dc1883d8a7b0147261aab6898d0bd0..0dbd3bc3283140e82e81003212e01a4477aea72c 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -142,7 +142,6 @@ set(COMMON_FLAGS
     -Wno-unused-function
     -Wno-error=literal-suffix
     -Wno-error=unused-local-typedefs
-    -Wno-error=parentheses-equality # Warnings in pybind11
     -Wno-error=ignored-attributes  # Warnings in Eigen, gcc 6.3
     -Wno-error=terminate  # Warning in PADDLE_ENFORCE
     -Wno-error=int-in-bool-context # Warning in Eigen gcc 7.2