diff --git a/.gitignore b/.gitignore
index 904ee2c23f..40bb34d2aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -106,7 +106,7 @@ README.txt
 *.spec
 test/testdata/sigs/player-*.js
 test/testdata/thumbnails/empty.webp
-test/testdata/thumbnails/foo %d bar/foo_%d.*
+test/testdata/thumbnails/foo\ %d\ bar/foo_%d.*
 
 # Binary
 /youtube-dl