1 files changed, 1 insertions, 1 deletions
diff --git a/src/net.h b/src/net.h
index 78055bfc69..6678e566a7 100644
--- a/src/net.h
+++ b/src/net.h
@@ -66,7 +66,7 @@ bool StopNode();
 //  (4) size
 //  (4) checksum
 
-extern char pchMessageStart[4];
+extern unsigned char pchMessageStart[4];
 
 class CMessageHeader
 {