diff --git a/Makefile b/Makefile
index 39ed0153bbcfa88dd3895820c4044bd1d403c663..b762bb55b0776c09b5820cff21c1c867a40230f7 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ K := $(foreach exec,$(EXECUTABLES),\
         $(if $(shell which $(exec)),some string,$(error "No $(exec) in PATH)))
 
 doc:
-	cd Doc;$(MAKE) -j ${numCores} all
+	cd Doc;$(MAKE) all
 
 exam:
 	cd Klausuren/Sd1;$(MAKE) -j ${numCores} all