diff --git a/include/libtorrent/fingerprint.hpp b/include/libtorrent/fingerprint.hpp
index dbd0ac74e..d7e5a5fc6 100755
--- a/include/libtorrent/fingerprint.hpp
+++ b/include/libtorrent/fingerprint.hpp
@@ -71,10 +71,10 @@ namespace libtorrent
 		}
 
 		char name[2];
-		char major_version;
-		char minor_version;
-		char revision_version;
-		char tag_version;
+		int major_version;
+		int minor_version;
+		int revision_version;
+		int tag_version;
 
 	private: