diff --git a/t/lib-unicode-nfc-nfd.sh b/t/lib-unicode-nfc-nfd.sh
index aed0a4dd44..201ab9b24c 100755
--- a/t/lib-unicode-nfc-nfd.sh
+++ b/t/lib-unicode-nfc-nfd.sh
@@ -75,7 +75,7 @@ test_lazy_prereq UNICODE_NFD_PRESERVED '
 #
 # Note that I've used the canonical ordering of the
 # combining characters.  It is also possible to
-# swap them.  My testing shows that that non-standard
+# swap them.  My testing shows that non-standard
 # ordering also causes a collision in mkdir.  However,
 # the resulting names don't draw correctly on the
 # terminal (implying that the on-disk format also has