diff --git a/pkgs/build-support/fetchgitrevision/default.nix b/pkgs/build-support/fetchgitrevision/default.nix
index d1e96f4bee5b..e877648978d9 100644
--- a/pkgs/build-support/fetchgitrevision/default.nix
+++ b/pkgs/build-support/fetchgitrevision/default.nix
@@ -7,4 +7,4 @@ runCommand: git: repository: branch:
       rev=$(git ls-remote ${repository} | grep "refs/${branch}$" | awk '{ print $1 }')
       echo "[ \"$rev\" ]" > $out
       echo Latest revision in ${branch} is $rev
-    '');
+    '')