diff --git a/krebs/3modules/build.nix b/krebs/3modules/build.nix
index 00142acdd..0da5dd38a 100644
--- a/krebs/3modules/build.nix
+++ b/krebs/3modules/build.nix
@@ -74,7 +74,7 @@ let
 
           unset tmpdir
           trap '
-            rm "$tmpdir"/*
+            rm -f "$tmpdir"/*
             rmdir "$tmpdir"
             trap - EXIT INT QUIT
           '        EXIT INT QUIT