diff --git a/Mac/Include/config.h b/Mac/Include/config.h
index d582115367b..9664cc77ffa 100644
--- a/Mac/Include/config.h
+++ b/Mac/Include/config.h
@@ -13,6 +13,11 @@
 #define HAVE_FOPENRF
 #endif
 
+#ifdef __SC__
+#define atof Py_AtoF
+#define strtod Py_StrToD
+#endif
+
 /* Define if on AIX 3.
    System headers sometimes define this.
    We just want to avoid a redefinition error message.  */