diff --git a/Mac/Modules/config.c b/Mac/Modules/config.c
index 2cd6c1d..6ba4fc2 100644
--- a/Mac/Modules/config.c
+++ b/Mac/Modules/config.c
@@ -32,6 +32,9 @@
 
 extern void initarray();
 extern void initmath();
+#ifndef WITHOUT_COMPLEX
+extern void initcmath();
+#endif
 extern void initparser();
 extern void initmac();
 extern void MacOS_Init();
@@ -134,6 +137,9 @@
 /* The math library seems mostly broken... */
 	{"math", initmath},
 #endif
+#ifndef WITHOUT_COMPLEX
+	{"cmath", initcmath},
+#endif
 	{"parser", initparser},
 	{"mac", initmac},
 	{"MacOS", MacOS_Init},