diff --git a/right/src/usb_protocol_handler.c b/right/src/usb_protocol_handler.c
index 6f60f01..b39cda0 100644
--- a/right/src/usb_protocol_handler.c
+++ b/right/src/usb_protocol_handler.c
@@ -88,7 +88,7 @@ void applyConfig(void)
 {
     uint8_t *temp;
     char oldKeymapAbbreviation[3];
-    char oldKeymapAbbreviationLen;
+    uint8_t oldKeymapAbbreviationLen;
 
     ParserRunDry = true;
     StagingUserConfigBuffer.offset = 0;