diff --git a/fuzzers/019-clb-ndi1mux/Makefile b/fuzzers/019-clb-ndi1mux/Makefile
index a28b0d4b..ba58ecde 100644
--- a/fuzzers/019-clb-ndi1mux/Makefile
+++ b/fuzzers/019-clb-ndi1mux/Makefile
@@ -1,4 +1,4 @@
-N := 1
+N := 3
 SLICEL ?= N
 include ../clb.mk