diff --git a/fpga/Makefile b/fpga/Makefile
index 79bdb338b8..e02dac5491 100644
--- a/fpga/Makefile
+++ b/fpga/Makefile
@@ -90,12 +90,10 @@ fpga_common_script_dir := $(fpga_dir)/common/tcl
 #########################################################################################
 # setup misc. sim files
 #########################################################################################
-SIM_FILE_REQS += \
-	$(ROCKETCHIP_RSRCS_DIR)/vsrc/EICG_wrapper.v
-
 # copy files but ignore *.h files in *.f (match vcs)
 $(sim_files): $(SIM_FILE_REQS) $(ALL_MODS_FILELIST) | $(GEN_COLLATERAL_DIR)
-	cp -f $(SIM_FILE_REQS) $(GEN_COLLATERAL_DIR)
+	-cp -f $(SIM_FILE_REQS) $(GEN_COLLATERAL_DIR)
+	touch $@
 	$(foreach file,\
 		$(SIM_FILE_REQS),\
 		$(if $(filter %.h,$(file)),\