diff --git a/Makefile b/Makefile
index aeaaf14..cc765d3 100644
--- a/Makefile
+++ b/Makefile
@@ -75,9 +75,9 @@ $(ISO_NAME)-CHECKSUM: $(ISO_NAME)
 
 # Build end ISO
 $(ISO_NAME): results/images/boot.iso container/$(IMAGE_NAME)-$(IMAGE_TAG) xorriso/input.txt
-	$(if $(wildcard build),,mkdir build)
+	$(if $(wildcard $(dir $(ISO_NAME))),,mkdir -p $(dir $(ISO_NAME)))
 	xorriso -dialog on < $(_BASE_DIR)/xorriso/input.txt
-	implantisomd5 build/$(ISO_NAME)
+	implantisomd5 $(ISO_NAME)
 
 # Build boot.iso using Lorax
 results/images/boot.iso: external/lorax/branch-$(VERSION) $(filter lorax_templates/%,$(_LORAX_TEMPLATES)) $(_REPO_FILES)