diff --git a/tests/simple/dff_init.v b/tests/simple/dff_init.v
new file mode 100644
index 000000000..aad378346
--- /dev/null
+++ b/tests/simple/dff_init.v
@@ -0,0 +1,10 @@
+module dff_test(n1, n1_inv, clk);
+  input clk;
+  (* init = 32'd0 *)
+  output n1;
+  reg n1 = 32'd0;
+  output n1_inv;
+  always @(posedge clk)
+      n1 <= n1_inv;
+  assign n1_inv = ~n1;
+endmodule