diff --git a/vlsi/Makefile b/vlsi/Makefile
index e2ccda72..452c64ef 100644
--- a/vlsi/Makefile
+++ b/vlsi/Makefile
@@ -103,16 +103,16 @@ $(SRAM_CONF): $(SRAM_GENERATOR_CONF)
 include $(base_dir)/vcs.mk
 
 SIM_FILE_REQS += \
-	 	$(ROCKETCHIP_RSRCS_DIR)/vsrc/TestDriver.v
+ 	$(ROCKETCHIP_RSRCS_DIR)/vsrc/TestDriver.v
 
 # copy files but ignore *.h files in *.f since vcs has +incdir+$(build_dir)
 $(sim_files): $(SIM_FILE_REQS) | $(build_dir)
 	cp -f $^ $(build_dir)
-		$(foreach file,\
-	 			$^,\
-	 			$(if $(filter %.h,$(file)),\
-	 					,\
-	 					echo "$(addprefix $(build_dir)/, $(notdir $(file)))" >> $@;))
+	$(foreach file,\
+		$^,\
+		$(if $(filter %.h,$(file)),\
+			,\
+			echo "$(addprefix $(build_dir)/, $(notdir $(file)))" >> $@;))
 
 SIM_CONF = $(OBJ_DIR)/sim-inputs.yml
 SIM_DEBUG_CONF = $(OBJ_DIR)/sim-debug-inputs.yml