diff --git a/gitk-git/gitk b/gitk-git/gitk
index d93bd990a9..55bb9c7d43 100755
--- a/gitk-git/gitk
+++ b/gitk-git/gitk
@@ -7855,6 +7855,7 @@ proc getblobdiffline {bdf ids} {
 		set diffinhdr 0
 		continue
 	    }
+	    set line [encoding convertfrom $line]
 	    $ctext insert end "$line\n" filesep
 
 	} else {