diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0323f32525..3c88d3aa75 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -145,10 +145,12 @@ if(NOT OPENGL_GLU_FOUND)
 	message(FATAL_ERROR "GLU is required but not found")
 endif()
 
-include(FindOpenMP REQUIRED)
+include(FindOpenMP)
 if(OPENMP_FOUND)
-	add_definitions(${OpenMP_CXX_FLAGS})
-	set(CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_CXX_FLAGS})
+	add_definitions("${OpenMP_CXX_FLAGS}")
+	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_CXX_FLAGS}")
+else()
+	message(FATAL_ERROR "OpenMP is required but not found")
 endif()
 
 include(FindALSA OPTIONAL)