diff --git a/pkgs/development/go-modules/generic/default.nix b/pkgs/development/go-modules/generic/default.nix
index 72b6ad7fdf9..da7a9b179cc 100644
--- a/pkgs/development/go-modules/generic/default.nix
+++ b/pkgs/development/go-modules/generic/default.nix
@@ -138,7 +138,7 @@ go.stdenv.mkDerivation (
         while read f; do
           echo "$f" | grep -q '^./\(src\|pkg/[^/]*\)/${goPackagePath}' || continue
           mkdir -p "$(dirname "$out/share/go/$f")"
-          cp $NIX_BUILD_TOP/go/$f $out/share/go/$f
+          cp "$NIX_BUILD_TOP/go/$f" "$out/share/go/$f"
         done < <(find . -type f)
         popd
     fi