diff --git a/src/project.conf b/src/project.conf
index dd1c3b8..62384f6 100644
--- a/src/project.conf
+++ b/src/project.conf
@@ -1,5 +1,6 @@
 targets=counter.vvp,delay.vvp
 dist=Makefile,system.v
+verilog=iverilog
 
 [counter.vvp]
 type=object