Index: src/OFTarArchiveEntry.m
==================================================================
--- src/OFTarArchiveEntry.m
+++ src/OFTarArchiveEntry.m
@@ -174,11 +174,11 @@
 		_toRead = 0;
 	}
 
 	if (_size % 512 != 0)
 		[_stream readIntoBuffer: buffer
-			    exactLength: 512 - (_size % 512)];
+			    exactLength: 512 - ((size_t)_size % 512)];
 }
 
 - (OFString*)description
 {
 	void *pool = objc_autoreleasePoolPush();