diff --git a/flows/makefile.simulate b/flows/makefile.simulate
index fd8b7966ef80b57a27a8f62482900be9514cbe82..eeea9bfdd509c833ee51611980dd0e221ecdba48 100644
--- a/flows/makefile.simulate
+++ b/flows/makefile.simulate
@@ -94,11 +94,8 @@ sim_xm : code compile_xm
 
 # Compile RTL
 compile_mti : bootrom gen_defs
-	@echo ADP_FILE
-	@echo $(ADP_OPTIONS)
-	@echo $(ADP_FILE)
-	@echo $(ADP_PATH)
-	cd $(SIM_DIR)
+	@mkdir -p $(SIM_DIR)
+	@cd $(SIM_DIR)
 	@if [ -d work ] ; then \
           true ; \
 	else \