diff --git a/Mac/Python/macglue.c b/Mac/Python/macglue.c
index feb148f..25bc3f7 100644
--- a/Mac/Python/macglue.c
+++ b/Mac/Python/macglue.c
@@ -65,9 +65,9 @@
 /* Functions we redefine because they're in obscure libraries */
 extern void SpinCursor(short x);
 extern void RotateCursor(short x);
-extern pascal void PLstrcpy(unsigned char *, unsigned char *);
-extern pascal int PLstrcmp(unsigned char *, unsigned char *);
-extern pascal unsigned char *PLstrrchr(unsigned char *, unsigned char);
+extern pascal unsigned char * PLstrcpy(unsigned char *, const unsigned char *);
+extern pascal short PLstrcmp(const unsigned char *, const unsigned char *);
+extern pascal char *PLstrrchr(const unsigned char *, short);
 
 #endif
 
diff --git a/Mac/Python/macshlglue.c b/Mac/Python/macshlglue.c
index 523efc9..d88d443 100644
--- a/Mac/Python/macshlglue.c
+++ b/Mac/Python/macshlglue.c
@@ -54,7 +54,7 @@
 extern void __initialize(void);
 
 /* Defined either in macglue.c or in a MPW library: */
-extern pascal int PLstrcmp(unsigned char *, unsigned char *);
+extern pascal short PLstrcmp(const unsigned char *, const unsigned char *);
 
 /*
 ** Variables passed from shared lib initialization to PyMac_AddLibResources.