diff --git a/dev-qt/qt5/patches/qt5-5.5.1.patchset b/dev-qt/qt5/patches/qt5-5.5.1.patchset
index a33968b1c..b63bca85e 100644
--- a/dev-qt/qt5/patches/qt5-5.5.1.patchset
+++ b/dev-qt/qt5/patches/qt5-5.5.1.patchset
@@ -881,7 +881,7 @@ index f3aa9dc..300badb 100644
 +
 +			for ( int i = 0; msg->GetInfo(B_MIME_TYPE, i, &name, &type, &count) == B_OK; i++ ) {
 +				const void *data;
-+				int32 dataLen = 0;
++				ssize_t dataLen = 0;
 +				status_t stat = msg->FindData(name,B_MIME_TYPE,&data,&dataLen);
 +				if(dataLen && stat==B_OK)	{
 +					QString mime(name);