--- dyld/dyld-1340/mach_o/Fixups.cpp
+++ dyld/dyld-1165.3/mach_o/Fixups.cpp
@@ -30,19 +30,13 @@
 
 namespace mach_o {
 
-const char* Fixup::keyName(uint8_t keyNum)
+const char* Fixup::keyName() const
 {
-    assert(keyNum < 4);
+    assert(authenticated);
     static const char* const names[] = {
         "IA", "IB", "DA", "DB"
     };
-    return names[keyNum];
-}
-
-const char* Fixup::keyName() const
-{
-    assert(authenticated);
-    return keyName(this->auth.key);
+    return names[this->auth.key];
 }
 
 bool Fixup::operator==(const Fixup& other) const