diff -ru class-dump-3.1.2/src/CDClassDump.m class-dump-3.1.2+iPhone/src/CDClassDump.m
--- class-dump-3.1.2/src/CDClassDump.m	2008-04-20 13:16:43.000000000 +0000
+++ class-dump-3.1.2+iPhone/src/CDClassDump.m	2007-11-05 18:14:56.000000000 +0000
@@ -366,7 +366,7 @@
         if (preferredArchName == nil) {
             [self setPreferredArchName:[aMachOFile archName]];
         } else if ([[aMachOFile archName] isEqual:preferredArchName] == NO) {
-            fprintf(stderr, "class-dump: Mach-O file (%s) does not contain required cpu type: %@.\n",
+            fprintf(stderr, "class-dump: Mach-O file (%s) does not contain required cpu type: %s.\n",
                     [aFilename fileSystemRepresentation], [preferredArchName UTF8String]);
             [aMachOFile release];
             return NO;