diff --git a/Makefile b/Makefile
index 045e399..1927932 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 CFLAG=-Wall -ggdb3
 BUILD_DIR=build
+SRC_DIR=src
 
 all: build_dir stack_vm
 
@@ -10,16 +11,16 @@ stack_vm: main.o run.o stack.o command.o
 	$(CC) $(BUILD_DIR)/main.o $(BUILD_DIR)/run.o $(BUILD_DIR)/stack.o $(BUILD_DIR)/command.o -o $(BUILD_DIR)/$@
 
 main.o:
-	$(CC) -c main.c $(CFLAG) -o $(BUILD_DIR)/$@
+	$(CC) -c $(SRC_DIR)/main.c $(CFLAG) -o $(BUILD_DIR)/$@
 
 run.o:
-	$(CC) -c run.c $(CFLAG) -o $(BUILD_DIR)/$@
+	$(CC) -c $(SRC_DIR)/run.c $(CFLAG) -o $(BUILD_DIR)/$@
 
 stack.o:
-	$(CC) -c stack.c $(CFLAG) -o $(BUILD_DIR)/$@
+	$(CC) -c $(SRC_DIR)/stack.c $(CFLAG) -o $(BUILD_DIR)/$@
 
 command.o:
-	$(CC) -c command.c $(CFLAG) -o $(BUILD_DIR)/$@
+	$(CC) -c $(SRC_DIR)/command.c $(CFLAG) -o $(BUILD_DIR)/$@
 
 clean:
 	rm -rf $(BUILD_DIR)
diff --git a/command.c b/src/command.c
similarity index 100%
rename from command.c
rename to src/command.c
diff --git a/command.h b/src/command.h
similarity index 100%
rename from command.h
rename to src/command.h
diff --git a/main.c b/src/main.c
similarity index 100%
rename from main.c
rename to src/main.c
diff --git a/run.c b/src/run.c
similarity index 100%
rename from run.c
rename to src/run.c
diff --git a/run.h b/src/run.h
similarity index 100%
rename from run.h
rename to src/run.h
diff --git a/stack.c b/src/stack.c
similarity index 100%
rename from stack.c
rename to src/stack.c
diff --git a/stack.h b/src/stack.h
similarity index 100%
rename from stack.h
rename to src/stack.h
diff --git a/utils.c b/src/utils.c
similarity index 100%
rename from utils.c
rename to src/utils.c
diff --git a/utils.h b/src/utils.h
similarity index 100%
rename from utils.h
rename to src/utils.h