diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 251c902e..69bcb286 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -85,7 +85,7 @@ jobs:
           cd test/katrunner &&
           wget http://amongbytes.com/files/kat.zip
           unzip kat.zip
-          cargo run --release -- --katdir KAT
+          cargo run --release -- --katdir kat
   MEMSAN:
     name: Memory Sanitizer build
     runs-on: [ubuntu-20.04]