diff --git a/Makefile b/Makefile
index 121cfd216..2315518cb 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 #
 
 # You can set these variables from the command line.
-SPHINXOPTS    = -j auto
+SPHINXOPTS    =
 SPHINXBUILD   = sphinx-build
 PAPER         =
 BUILDDIR      = _build
diff --git a/make.bat b/make.bat
index a0112c176..c1e71af15 100644
--- a/make.bat
+++ b/make.bat
@@ -10,7 +10,6 @@ if "%SPHINXBUILD%" == "" (
 set SOURCEDIR=.
 set BUILDDIR=_build
 set SPHINXPROJ=Test
-set SPHINXOPTS=-j auto
 
 if "%1" == "" goto help