diff --git a/Makefile b/Makefile
index 5a62241..5b56c5d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CC = gcc
 CFLAGS = -Wall -Wextra -std=c11
-SRCDIR = .
+SRCDIR = ./c-basic
 SRC = $(wildcard $(SRCDIR)/*.c)
 OBJ = $(SRC:.c=.o)
 TARGET = main
@@ -8,10 +8,10 @@ TARGET = main
 all: $(TARGET)
 
 $(TARGET): $(OBJ)
-	$(CC) $(CFLAGS) -o $@ $^
+    $(CC) $(CFLAGS) -o $@ $^
 
-%.o: %.c
-	$(CC) $(CFLAGS) -c $< -o $@
+$(SRCDIR)/%.o: $(SRCDIR)/%.c
+    $(CC) $(CFLAGS) -c $< -o $@
 
 clean:
-	rm -f $(OBJ) $(TARGET)
\ No newline at end of file
+    rm -f $(OBJ) $(TARGET)
\ No newline at end of file