diff --git a/cl_firesim/simulation.cfg b/cl_firesim/simulation.cfg
index 9590325..42e78cc 100644
--- a/cl_firesim/simulation.cfg
+++ b/cl_firesim/simulation.cfg
@@ -1,2 +1,7 @@
 # Configuration settings used only for FPGA-level simulation
 # This is the hw_emu (hardware emulation) target of v++
+[advanced]
+param=compiler.userPreSysLinkOverlayTcl=../test.tcl
+param=compiler.userPostSysLinkOverlayTcl=../test.tcl
+param=compiler.userPostDebugProfileOverlayTcl=../test.tcl
+
diff --git a/cl_firesim/test.tcl b/cl_firesim/test.tcl
new file mode 100644
index 0000000..b1f0e4c
--- /dev/null
+++ b/cl_firesim/test.tcl
@@ -0,0 +1 @@
+set_property preferred_sim_model "rtl" [current_project]