diff --git a/Documentation/Makefile.sphinx b/Documentation/Makefile.sphinx
index 91f541a52884..b88f666f72bb 100644
--- a/Documentation/Makefile.sphinx
+++ b/Documentation/Makefile.sphinx
@@ -99,7 +99,7 @@ installmandocs:
 
 cleandocs:
 	$(Q)rm -rf $(BUILDDIR)
-	$(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) -C Documentation/media clean
+	$(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/media clean
 
 endif # HAVE_SPHINX