diff --git a/docs/Makefile b/docs/Makefile
index 850fe39..0ea966c 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -3,7 +3,7 @@
 
 # You can set these variables from the command line.
 SPHINXOPTS    =
-SPHINXBUILD   = sphinx-build
+SPHINXBUILD   = ../../bin/sphinx-build
 PAPER         =
 BUILDDIR      = _build