diff --git a/CMakeLists.txt b/CMakeLists.txt
index 27a8c574d..b51468cc4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -132,6 +132,10 @@ elseif(LOWERCASE_CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64(le)?")
 else()
 	set(NEEDS_SIMDE "1")
 	add_definitions(-DNEEDS_SIMDE=1)
+	if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
+		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp-simd -DSIMDE_ENABLE_OPENMP")
+		set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fopenmp-simd -DSIMDE_ENABLE_OPENMP")
+	endif()
 	set(ARCH_SIMD_FLAGS "")
 	message(STATUS "No Native SSE2 SIMD Support - Using SIMDE")
 endif()