Index: src/exceptions/OFInvalidJSONException.m
==================================================================
--- src/exceptions/OFInvalidJSONException.m
+++ src/exceptions/OFInvalidJSONException.m
@@ -65,11 +65,11 @@
 }
 
 - (OFString*)description
 {
 	return [OFString stringWithFormat:
-	    @"The JSON representation is invalid in line %zd!", _line];
+	    @"The JSON representation is invalid in line %zu!", _line];
 }
 
 - (OFString*)string
 {
 	return _string;

Index: src/exceptions/OFMalformedXMLException.m
==================================================================
--- src/exceptions/OFMalformedXMLException.m
+++ src/exceptions/OFMalformedXMLException.m
@@ -47,15 +47,15 @@
 - (OFString*)description
 {
 	if (_parser != nil)
 		return [OFString stringWithFormat:
 		    @"An XML parser of type %@ encountered malformed XML in "
-		    @"line %zd!", [_parser class], [_parser lineNumber]];
+		    @"line %zu!", [_parser class], [_parser lineNumber]];
 	else
 		return @"An XML parser encountered malformed XML!";
 }
 
 - (OFXMLParser*)parser
 {
 	OF_GETTER(_parser, false)
 }
 @end

Index: src/exceptions/OFUnboundPrefixException.m
==================================================================
--- src/exceptions/OFUnboundPrefixException.m
+++ src/exceptions/OFUnboundPrefixException.m
@@ -70,11 +70,11 @@
 
 - (OFString*)description
 {
 	return [OFString stringWithFormat:
 	    @"An XML parser of type %@ encountered the unbound prefix %@ in "
-	    @"line %zd!", [_parser class], _prefix, [_parser lineNumber]];
+	    @"line %zu!", [_parser class], _prefix, [_parser lineNumber]];
 }
 
 - (OFString*)prefix
 {
 	OF_GETTER(_prefix, false)

Index: tests/TestsAppDelegate.m
==================================================================
--- tests/TestsAppDelegate.m
+++ tests/TestsAppDelegate.m
@@ -326,14 +326,14 @@
 			[OFApplication terminateWithStatus: _fails];
 
 		VIDEO_WaitVSync();
 	}
 #elif defined(_PSP)
-	[self outputString: [OFString stringWithFormat: @"%zd tests failed!",
+	[self outputString: [OFString stringWithFormat: @"%d tests failed!",
 							_fails]
 		   inColor: NO_COLOR];
 	sceKernelSleepThreadCB();
 #else
 	[OFApplication terminateWithStatus: _fails];
 #endif
 }
 @end