diff --git a/doc/make.py b/doc/make.py
index 5d088e7981c3c5844b7e7a0fd876ece97647ab68..f928ba1c40b86258cefaead4be140d685a6d97c8 100644
--- a/doc/make.py
+++ b/doc/make.py
@@ -113,7 +113,7 @@ for builder in builders:
   Sphinx(
     srcdir='doc/source',
     confdir='doc/conf',
-    outdir='doc/build/html',
+    outdir='doc/build/%s' % builder,
     doctreedir='doc/build/html/.doctrees',
     buildername=builder,
     **extra_args).build(True)