diff --git a/build/cmake/config.cmake b/build/cmake/config.cmake
index d397f0dca2..c4e1b053e1 100644
--- a/build/cmake/config.cmake
+++ b/build/cmake/config.cmake
@@ -105,9 +105,9 @@ function(wx_write_config)
             endif()
         endif()
     endforeach()
-    string(STRIP ${BUILT_WX_LIBS} BUILT_WX_LIBS)
-    string(STRIP ${STD_BASE_LIBS} STD_BASE_LIBS)
-    string(STRIP ${STD_GUI_LIBS} STD_GUI_LIBS)
+    string(STRIP "${BUILT_WX_LIBS}" BUILT_WX_LIBS)
+    string(STRIP "${STD_BASE_LIBS}" STD_BASE_LIBS)
+    string(STRIP "${STD_GUI_LIBS}" STD_GUI_LIBS)
 
     set(WX_RELEASE ${wxMAJOR_VERSION}.${wxMINOR_VERSION})
     set(WX_VERSION ${wxVERSION})