Index: src/OFHTTPClient.m
==================================================================
--- src/OFHTTPClient.m
+++ src/OFHTTPClient.m
@@ -111,11 +111,11 @@
 	contentLength = [headers objectForKey: @"Content-Length"];
 	if (contentLength != nil) {
 		_hasContentLength = true;
 
 		@try {
-			_toRead = [contentLength decimalValue];
+			_toRead = (size_t)[contentLength decimalValue];
 		} @catch (OFInvalidFormatException *e) {
 			@throw [OFInvalidServerReplyException
 			    exceptionWithClass: [self class]];
 		}
 	}