diff --git a/doc/Makefile b/doc/Makefile
index 1fb17cfc31..561989237b 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -1,5 +1,5 @@
 SRCDIR = ../src
-SED:=$(shell command -v sed || gsed)
+SED:=$(shell command -v gsed || which sed)
 
 all: doxygen