Index: src/OFDataArray.m
==================================================================
--- src/OFDataArray.m
+++ src/OFDataArray.m
@@ -193,11 +193,11 @@
 	    fromCArray: data];
 
 	return new;
 }
 
-- (BOOL)isEqual: (OFObject*)obj
+- (BOOL)isEqual: (id)obj
 {
 	if (![obj isKindOfClass: [OFDataArray class]])
 		return NO;
 	if ([(OFDataArray*)obj count] != count ||
 	    [(OFDataArray*)obj itemSize] != itemSize)

Index: src/OFDictionary.m
==================================================================
--- src/OFDictionary.m
+++ src/OFDictionary.m
@@ -580,11 +580,11 @@
 - mutableCopy
 {
 	return [[OFMutableDictionary alloc] initWithDictionary: self];
 }
 
-- (BOOL)isEqual: (OFDictionary*)dict
+- (BOOL)isEqual: (id)dict
 {
 	uint32_t i;
 
 	if ([dict count] != count)
 		return NO;

Index: src/OFNumber.m
==================================================================
--- src/OFNumber.m
+++ src/OFNumber.m
@@ -799,11 +799,11 @@
 - (double)doubleValue
 {
 	RETURN_AS(double)
 }
 
-- (BOOL)isEqual: (OFObject*)obj
+- (BOOL)isEqual: (id)obj
 {
 	if (![obj isKindOfClass: [OFNumber class]])
 		return NO;
 
 	switch (type) {

Index: src/OFString.m
==================================================================
--- src/OFString.m
+++ src/OFString.m
@@ -722,11 +722,11 @@
 - (BOOL)isUTF8
 {
 	return isUTF8;
 }
 
-- (BOOL)isEqual: (OFObject*)obj
+- (BOOL)isEqual: (id)obj
 {
 	if (![obj isKindOfClass: [OFString class]])
 		return NO;
 	if (strcmp(string, [(OFString*)obj cString]))
 		return NO;