diff --git a/pkgs/build-support/singularity-tools/default.nix b/pkgs/build-support/singularity-tools/default.nix
index 318f5b430fef..a6a3cd001b4a 100644
--- a/pkgs/build-support/singularity-tools/default.nix
+++ b/pkgs/build-support/singularity-tools/default.nix
@@ -73,7 +73,7 @@ rec {
             ''}
 
             # Build /bin and copy across closure
-            mkdir -p bin nix/store
+            mkdir -p bin ./${builtins.storeDir}
             for f in $(cat $layerClosure) ; do
               cp -ar $f ./$f
             done