diff --git a/tests/modules/programs/powerline-go/bash.nix b/tests/modules/programs/powerline-go/bash.nix
index b01fcb1a7..945bde731 100644
--- a/tests/modules/programs/powerline-go/bash.nix
+++ b/tests/modules/programs/powerline-go/bash.nix
@@ -18,6 +18,9 @@ with lib;
       };
     };
 
+    nixpkgs.overlays =
+      [ (self: super: { powerline-go = pkgs.writeScriptBin "dummy-pkg" ""; }) ];
+
     nmt.script = ''
       assertFileExists home-files/.bashrc
       assertFileContains \
diff --git a/tests/modules/programs/powerline-go/zsh.nix b/tests/modules/programs/powerline-go/zsh.nix
index 702149528..0ed88215d 100644
--- a/tests/modules/programs/powerline-go/zsh.nix
+++ b/tests/modules/programs/powerline-go/zsh.nix
@@ -18,8 +18,12 @@ with lib;
       };
     };
 
-    nixpkgs.overlays =
-      [ (self: super: { zsh = pkgs.writeScriptBin "dummy-zsh" ""; }) ];
+    nixpkgs.overlays = [
+      (self: super: {
+        powerline-go = pkgs.writeScriptBin "dummy-pkg" "";
+        zsh = pkgs.writeScriptBin "dummy-pkg" "";
+      })
+    ];
 
     nmt.script = ''
       assertFileExists home-files/.zshrc