diff --git a/mozilla/lib/layout/laytext.c b/mozilla/lib/layout/laytext.c
index ca778da261d..6ea685bdadf 100644
--- a/mozilla/lib/layout/laytext.c
+++ b/mozilla/lib/layout/laytext.c
@@ -8420,7 +8420,7 @@ Bool lo_GrowTextBlock ( LO_TextBlock * block, uint32 length )
 static void
 lo_CopyText ( uint8 * src, uint8 * dst, uint32 length )
 {
-	char	c;
+	uint8	c;
 	
 	/* copy a text string, converting non breaking spaces to normal spaces as we go */
 	while ( length-- )