diff --git a/Makefile b/Makefile
index 97bc33ef..689c8ca8 100644
--- a/Makefile
+++ b/Makefile
@@ -14,11 +14,27 @@ BRANCH_FILE := $(OUTPUT)/branch_list.txt
 
 default: build
 
-#linux only
 config:
 	cp docs/config.yaml config.bak
+	# Check if config.yaml exists
+	if [ ! -f docs/config.yaml ]; then \
+	    echo "docs/config.yaml not found!"; \
+	    exit 1; \
+	fi
+
+	# Check the OS and set the sed command accordingly
+	if [ "$(uname)" == "Darwin" ]; then \
+	    sed_command="sed -i .bak"; \
+	else \
+	    sed_command="sed -i"; \
+	fi
+
+	# Debug the sed command and version variable
+	echo "Using sed command: $(sed_command)"
+	echo "VERSION: $(VERSION)"
+
 	# Replace "BRANCH" in config.yaml with the value of VERSION
-	sed -i 's/BRANCH/$(VERSION)/g' docs/config.yaml
+	$(sed_command) 's/BRANCH/$(VERSION)/g' docs/config.yaml
 
 build: config
 	echo $(VERSIONS)