diff --git a/src/Makefile b/src/Makefile
index ba76c5e..9c1509f 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,10 +1,11 @@
-CC=gcc
-ODIR=obj
+CC = gcc
+ODIR = obj
+DEPS = nms.h
 
 _OBJ = nms.o
 OBJ = $(patsubst %,$(ODIR)/%,$(_OBJ))
 
-$(ODIR)/%.o: %.c
+$(ODIR)/%.o: %.c $(DEPS)
 	$(CC) -c -o $@ $<
 
 nms: $(OBJ)
diff --git a/src/obj/.gitignore b/src/obj/.gitignore
index 861051d..d6b7ef3 100644
--- a/src/obj/.gitignore
+++ b/src/obj/.gitignore
@@ -1,2 +1,2 @@
-*                                                                                                             
+*
 !.gitignore