diff --git a/runtime/compiler/CMakeLists.txt b/runtime/compiler/CMakeLists.txt
index cc56c5a13ce..bd8c03e6f3c 100644
--- a/runtime/compiler/CMakeLists.txt
+++ b/runtime/compiler/CMakeLists.txt
@@ -334,7 +334,7 @@ omr_stringify(J9_CXXFLAGS_STR ${J9_SHAREDFLAGS} ${J9_CXXFLAGS})
 set(CMAKE_CXX_FLAGS "${J9_CXXFLAGS_STR}")
 set(CMAKE_C_FLAGS "${J9_CFLAGS_STR}")
 
-if(OMR_ARCH_X86 OR OMR_ARCH_S390 OR OMR_ARCH_AARCH64)
+if(OMR_ARCH_X86 OR OMR_ARCH_S390 OR OMR_ARCH_AARCH64 OR (OMR_ARCH_POWER AND NOT OMR_TOOLCONFIG STREQUAL "xlc"))
 	set(OMR_WARNINGS_AS_ERRORS ON)
 	set(OMR_ENHANCED_WARNINGS OFF)
 else()