diff --git a/docs/Makefile b/docs/Makefile
index a7068fa..72639bd 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -1,4 +1,4 @@
-MARKDOWN := $(firstword $(shell type -P markdown markdown2 markdown_py 2>/dev/null || echo markdown))
+MARKDOWN := $(firstword $(shell bash -c 'type -P markdown markdown2 markdown_py' 2>/dev/null || echo markdown))
 .PHONY: docs
 
 docs: $(subst .md,.html,$(wildcard *.md)) index.html ../README.html
diff --git a/docs/install.md b/docs/install.md
index 7958e2c..f74f0c6 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -22,7 +22,7 @@ Dependencies
 
 * [Linux kernel version](btrfs-kernel.md) gets its own page.
 
-* markdown for documentation
+* markdown and bash for documentation
 
 * util-linux version that provides `blkid` command for the helper
   script `scripts/beesd` to work