diff --git a/t/README b/t/README
index 9028b47d923ca027a146da82060dae395d3f7999..56a417439c2575f616e7a9bb87177efefe9e6b52 100644
--- a/t/README
+++ b/t/README
@@ -315,7 +315,7 @@ packs on demand. This normally only happens when the object size is
 over 2GB. This variable forces the code path on any object larger than
 <n> bytes.
 
-GIT_TEST_OE_DELTA_SIZE=<n> exercises the uncomon pack-objects code
+GIT_TEST_OE_DELTA_SIZE=<n> exercises the uncommon pack-objects code
 path where deltas larger than this limit require extra memory
 allocation for bookkeeping.