diff --git a/include/SDL_config.h.cmake b/include/SDL_config.h.cmake
index 446c094686..f4bcd2be0a 100644
--- a/include/SDL_config.h.cmake
+++ b/include/SDL_config.h.cmake
@@ -231,7 +231,7 @@
 #       define HAVE_IMMINTRIN_H 1
 #    endif
 #  endif
-#else  /* non-Apple platforms can use the normal CMake check for this.
+#else  /* non-Apple platforms can use the normal CMake check for this. */
 #  cmakedefine HAVE_IMMINTRIN_H 1
 #endif