diff --git a/Makefile b/Makefile
index 698cd15..2f068d4 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ CC=gcc
 
 all: dump1090 view1090
 
-%.o: %.c
+%.o: %.c dump1090.h
 	$(CC) $(CPPFLAGS) $(CFLAGS) $(EXTRACFLAGS) -c $<
 
 dump1090: dump1090.o anet.o interactive.o mode_ac.o mode_s.o net_io.o