diff --git a/Makefile b/Makefile
index 77241f2cb36ca54f166614d713dc5cc358ee2fb0..61d9ad00e07d30bd18ced6e9a2add46a153bf864 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ numCores=$(shell nproc --all)
 DOCMODULES = Sd1 Sda1 Sda2
 
 doc:
-	cd Doc;$(MAKE) -j ${numCores}all
+	cd Doc;$(MAKE) -j ${numCores} all
 
 all:doc
 	mvn --fail-at-end install || exit 0