@@ -373,11 +373,12 @@
 	return _values;
 }
 
 - (instancetype)copy
 {
-	return [[OFMatrix4x4 alloc] initWithValues: _values];
+	return [[OFMatrix4x4 alloc]
+	    initWithValues: (const float (*)[4])_values];
 }
 
 - (bool)isEqual: (OFMatrix4x4 *)matrix
 {
 	if (![matrix isKindOfClass: [OFMatrix4x4 class]])