diff --git a/Makefile b/Makefile
index 6148027f5..a821b9f39 100644
--- a/Makefile
+++ b/Makefile
@@ -397,12 +397,12 @@ check-licenses: install-wwhrd
 	wwhrd check -f .wwhrd.yml
 
 copy-docs:
-	> ${DST}
-	@if [[ ${ORDER} > 0 ]]; then \
+	echo '' > ${DST}
+	@if [ ${ORDER} -ne 0 ]; then \
 		echo "---\nsort: ${ORDER}\n---\n" > ${DST}; \
 	fi
 	cat ${SRC} >> ${DST}
-	sed -i '' 's/<img src=\"docs\//<img src=\"/' ${DST}
+	sed -i 's/<img src=\"docs\//<img src=\"/' ${DST}
 
 # Copies docs for all components and adds the order tag.
 # For ORDER=0 it adds no order tag.
diff --git a/docs/README.md b/docs/README.md
index 907d6cd94..a786f1b2b 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -1,3 +1,4 @@
+
 # VictoriaMetrics
 
 [![Latest Release](https://img.shields.io/github/release/VictoriaMetrics/VictoriaMetrics.svg?style=flat-square)](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/latest)