diff --git a/Mac/Python/macglue.c b/Mac/Python/macglue.c
index f8e59cea6c3..a99023b433d 100644
--- a/Mac/Python/macglue.c
+++ b/Mac/Python/macglue.c
@@ -34,6 +34,9 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <Desk.h>
 #include <Traps.h>
 #include <Processes.h>
+#ifdef THINK_C
+#include <OSEvents.h> /* For EvQElPtr */
+#endif
 
 #include <signal.h>