diff --git a/workspace/all/cores/makefile b/workspace/all/cores/makefile
index e5dfce293..4d8973ac1 100644
--- a/workspace/all/cores/makefile
+++ b/workspace/all/cores/makefile
@@ -20,7 +20,7 @@ endif
 # this logic was broken out from picoarch's all-in-one makefile
 
 PATCH = git apply
-PROCS = -j4
+PROCS = -j
 
 ###############################