diff --git a/Makefile b/Makefile
index c18db0f..7af2969 100644
--- a/Makefile
+++ b/Makefile
@@ -20,6 +20,9 @@ tracegen: tracegen.c trans.o cachelab.c
 trans.o: trans.c
 	$(CC) $(CFLAGS) -O0 -c trans.c
 
+test: csim.c cachelab.c cachelab.h
+	$(CC) -o csim csim.c cachelab.c -lm -g -Wall -Wextra -std=c99
+
 #
 # Clean the src dirctory
 #