diff --git a/projects/rocr-runtime/runtime/hsa-runtime/cmake_modules/hsa_common.cmake b/projects/rocr-runtime/runtime/hsa-runtime/cmake_modules/hsa_common.cmake
index 0f7dd57a05..bc88566b17 100644
--- a/projects/rocr-runtime/runtime/hsa-runtime/cmake_modules/hsa_common.cmake
+++ b/projects/rocr-runtime/runtime/hsa-runtime/cmake_modules/hsa_common.cmake
@@ -63,7 +63,7 @@ if(UNIX)
     set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32" )
   endif ()
   if ( "${CMAKE_BUILD_TYPE}" STREQUAL Debug )
-    set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ggdb" )
+    set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O0 -ggdb" )
   endif ()
   add_definitions(-D __STDC_LIMIT_MACROS)
   add_definitions(-D __STDC_CONSTANT_MACROS)