diff --git a/Mac/mwerks/mwerks_shared_config.h b/Mac/mwerks/mwerks_shared_config.h
index 3ba89899145..93aadcd6e9e 100644
--- a/Mac/mwerks/mwerks_shared_config.h
+++ b/Mac/mwerks/mwerks_shared_config.h
@@ -1,9 +1,6 @@
-#define HAVE_CONFIG_H
 #define USE_MAC_SHARED_LIBRARY
-#define USE_MAC_DYNAMIC_LOADING
 #define USE_MAC_APPLET_SUPPORT
 /* #define USE_MACTCP */
 /* #define USE_BGEN */
 /* #define USE_MACSPEECH */
-#define USE_STACKCHECK
 
diff --git a/Mac/mwerks/old/mwerks_cfm68k_config.h b/Mac/mwerks/old/mwerks_cfm68k_config.h
index 7770af74da8..ae8b2edac87 100644
--- a/Mac/mwerks/old/mwerks_cfm68k_config.h
+++ b/Mac/mwerks/old/mwerks_cfm68k_config.h
@@ -1,2 +1,3 @@
-#define HAVE_CONFIG_H
-#define USE_MAC_DYNAMIC_LOADING
+#define USE_GUSI
+#define USE_MAC_SHARED_LIBRARY
+#define USE_MAC_APPLET_SUPPORT
diff --git a/Mac/mwerks/old/mwerks_nsgusitk_config.h b/Mac/mwerks/old/mwerks_nsgusitk_config.h
index 9ef57926976..83a9e1c86e5 100644
--- a/Mac/mwerks/old/mwerks_nsgusitk_config.h
+++ b/Mac/mwerks/old/mwerks_nsgusitk_config.h
@@ -1,16 +1,9 @@
-#define HAVE_CONFIG_H
-// #define USE_STDWIN
-// #define USE_MACTCP
+//#define USE_STDWIN
+//#define USE_MACTCP
 #define USE_BGEN
 //#define USE_MACSPEECH
-// #define USE_IMG
+//#define USE_IMG
 //#define USE_MACCTB
 #define USE_TK
-#define MAC_TCL
-#ifdef __powerc
-#define USE_MAC_DYNAMIC_LOADING
-#endif
 #define USE_GUSI
-#define USE_WASTE
-#define USE_STACKCHECK
-
+//#define USE_WASTE