diff --git a/pills/20/propagated-build-inputs-0.bash b/pills/20/propagated-build-inputs-0.bash
index ee3a526..b2ca8af 100644
--- a/pills/20/propagated-build-inputs-0.bash
+++ b/pills/20/propagated-build-inputs-0.bash
@@ -3,7 +3,7 @@ fixupPhase() {
     ## Elided
 
     if test -n "$propagatedBuildInputs"; then
-        ensureDir "$out/nix-support"
+        mkdir -p "$out/nix-support"
         echo "$propagatedBuildInputs" > "$out/nix-support/propagated-build-inputs"
     fi