diff --git a/reactos/cmake/gcc.cmake b/reactos/cmake/gcc.cmake
index 5ec887b048d..a6c7fd6bc2c 100644
--- a/reactos/cmake/gcc.cmake
+++ b/reactos/cmake/gcc.cmake
@@ -111,7 +111,7 @@ else()
 endif()
 
 # Warnings, errors
-if(NOT CMAKE_C_COMPILER_ID STREQUAL "Clang")
+if((NOT CMAKE_BUILD_TYPE STREQUAL "Release") AND (NOT CMAKE_C_COMPILER_ID STREQUAL "Clang"))
     add_compile_flags("-Werror")
 endif()