diff --git a/Mac/mwerks/mwerks_nonshared_config.h b/Mac/mwerks/mwerks_nonshared_config.h
index fd7f15ddc22..33a70f94c87 100644
--- a/Mac/mwerks/mwerks_nonshared_config.h
+++ b/Mac/mwerks/mwerks_nonshared_config.h
@@ -19,3 +19,4 @@
 /* #define USE_MAC_SHARED_LIBRARY	/* Enable code to add shared-library resources */
 /* #define USE_MAC_APPLET_SUPPORT	/* Enable code to run a PYC resource */
 /* #define USE_MALLOC_DEBUG			/* Enable range checking and other malloc debugging */
+#define USE_GDBM		/* Include the gdbm module */