diff --git a/scripts/upload-to-cache.sh b/scripts/upload-to-cache.sh
index daaa013..d38a8b2 100644
--- a/scripts/upload-to-cache.sh
+++ b/scripts/upload-to-cache.sh
@@ -2,7 +2,7 @@
 set -eu
 set -f
 
-if ! nix; then
+if ! nix --version; then
   exit 0
 fi