--- a/cmake/gmxDetectSimd.cmake
+++ b/cmake/gmxDetectSimd.cmake
@@ -77,7 +77,7 @@ function(gmx_suggest_simd _suggested_simd)
     else()
         set(GMX_TARGET_X86_VALUE 0)
     endif()
-    set(_compile_definitions "${GCC_INLINE_ASM_DEFINE} -I${CMAKE_SOURCE_DIR}/src -DGMX_CPUINFO_STANDALONE ${GMX_STDLIB_CXX_FLAGS} -DGMX_TARGET_X86=${GMX_TARGET_X86_VALUE}")
+    set(_compile_definitions ${GCC_INLINE_ASM_DEFINE} -I${CMAKE_SOURCE_DIR}/src -DGMX_CPUINFO_STANDALONE ${GMX_STDLIB_CXX_FLAGS} -DGMX_TARGET_X86=${GMX_TARGET_X86_VALUE})
 
     # Prepare a default suggestion
     set(OUTPUT_SIMD "None")