Index: src/OFObject.h
==================================================================
--- src/OFObject.h
+++ src/OFObject.h
@@ -587,21 +587,21 @@
  * This method is called if a class method was not found, so that an
  * implementation can be provided at runtime.
  *
  * @return Whether the method has been added to the class
  */
-+ (bool)resolveClassMethod: (SEL)selector;
++ (BOOL)resolveClassMethod: (SEL)selector;
 
 /*!
  * @brief Try to resolve the specified instance method.
  *
  * This method is called if an instance method was not found, so that an
  * implementation can be provided at runtime.
  *
  * @return Whether the method has been added to the class
  */
-+ (bool)resolveInstanceMethod: (SEL)selector;
++ (BOOL)resolveInstanceMethod: (SEL)selector;
 
 /*!
  * @brief Returns the class.
  *
  * This method exists so that classes can be used in collections requiring

Index: src/OFObject.m
==================================================================
--- src/OFObject.m
+++ src/OFObject.m
@@ -473,18 +473,18 @@
 #endif
 
 	[self inheritMethodsFromClass: [class superclass]];
 }
 
-+ (bool)resolveClassMethod: (SEL)selector
++ (BOOL)resolveClassMethod: (SEL)selector
 {
-	return false;
+	return NO;
 }
 
-+ (bool)resolveInstanceMethod: (SEL)selector
++ (BOOL)resolveInstanceMethod: (SEL)selector
 {
-	return false;
+	return NO;
 }
 
 - init
 {
 	return self;

Index: tests/ForwardingTests.m
==================================================================
--- tests/ForwardingTests.m
+++ tests/ForwardingTests.m
@@ -66,36 +66,36 @@
 {
 	success = true;
 }
 
 @implementation ForwardingTest
-+ (bool)resolveClassMethod: (SEL)selector
++ (BOOL)resolveClassMethod: (SEL)selector
 {
 	forwardings++;
 
 	if (sel_isEqual(selector, @selector(test))) {
 		[self replaceClassMethod: @selector(test)
 		      withImplementation: (IMP)test
 			    typeEncoding: "v#:"];
-		return true;
+		return YES;
 	}
 
-	return false;
+	return NO;
 }
 
-+ (bool)resolveInstanceMethod: (SEL)selector
++ (BOOL)resolveInstanceMethod: (SEL)selector
 {
 	forwardings++;
 
 	if (sel_isEqual(selector, @selector(test))) {
 		[self replaceInstanceMethod: @selector(test)
 			 withImplementation: (IMP)test
 			       typeEncoding: "v@:"];
-		return true;
+		return YES;
 	}
 
-	return false;
+	return NO;
 }
 
 - (id)forwardingTargetForSelector: (SEL)selector
 {
 	/*