diff --git a/fuzzers/018-clb-ram/Makefile b/fuzzers/018-clb-ram/Makefile
index ea7a36f3..d28d8447 100644
--- a/fuzzers/018-clb-ram/Makefile
+++ b/fuzzers/018-clb-ram/Makefile
@@ -1,4 +1,4 @@
-N := 2
+N := 4
 SLICEL ?= N
 include ../clb.mk