diff --git a/Mac/mwerks/mwerks_nonshared_config.h b/Mac/mwerks/mwerks_nonshared_config.h
index 5c201277a62..9ccbefab3e7 100644
--- a/Mac/mwerks/mwerks_nonshared_config.h
+++ b/Mac/mwerks/mwerks_nonshared_config.h
@@ -5,4 +5,6 @@
 #define USE_MACSPEECH
 #define USE_IMG
 #define USE_MACCTB
+#ifdef __powerc
 #define USE_MAC_DYNAMIC_LOADING
+#endif