diff --git a/vlsi/Makefile b/vlsi/Makefile
index 567090da..bdbeb1bb 100644
--- a/vlsi/Makefile
+++ b/vlsi/Makefile
@@ -70,8 +70,8 @@ SRAM_CONF=$(build_dir)/sram_generator-output.json
 srams: sram_generator
 sram_generator: $(SRAM_CONF)
 
-# This should be built alongside $(SMEMS_FILE)
-$(SMEMS_HAMMER): $(SMEMS_FILE)
+# This should be built alongside $(TOP_SMEMS_FILE)
+$(SMEMS_HAMMER): $(TOP_SMEMS_FILE)
 
 $(SRAM_GENERATOR_CONF): $(SMEMS_HAMMER)
 	mkdir -p $(dir $@)