diff --git a/Makefile b/Makefile
index 0bf04d1d02..f8e68d6c49 100644
--- a/Makefile
+++ b/Makefile
@@ -87,6 +87,7 @@ tools/%.o: tools/%.c
 	$(CC) $(CPPFLAGS) $(CFLAGS) -c $(CC_O) $<
 
 -include $(wildcard tools/*.d)
+-include $(wildcard tests/*.d)
 
 ffplay.o: CFLAGS += $(SDL_CFLAGS)