diff --git a/pkgs/applications/networking/instant-messengers/zoom-us/default.nix b/pkgs/applications/networking/instant-messengers/zoom-us/default.nix
index fd15e77c8be..96254253712 100644
--- a/pkgs/applications/networking/instant-messengers/zoom-us/default.nix
+++ b/pkgs/applications/networking/instant-messengers/zoom-us/default.nix
@@ -79,7 +79,7 @@ in stdenv.mkDerivation rec {
   installPhase = ''
     runHook preInstall
     mkdir $out
-    tar -C $out -xf ${src}
+    tar -C $out -xf $src
     mv $out/usr/* $out/
     runHook postInstall
   '';