diff --git a/.gitignore b/.gitignore
index a007392e..3b9d7d07 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,7 @@
 *lwip_unittests.xml
 *.suo
 *.log
-.depend
+.depend*
 
 /.vscode/ipch
 
diff --git a/contrib/ports/unix/check/Makefile b/contrib/ports/unix/check/Makefile
index 01a6d05e..4200c368 100644
--- a/contrib/ports/unix/check/Makefile
+++ b/contrib/ports/unix/check/Makefile
@@ -57,22 +57,28 @@ TESTDIR=$(LWIPDIR)/../test/unit
 include $(TESTDIR)/Filelists.mk
 TESTOBJS=$(notdir $(TESTFILES:.c=.o))
 
+DEPFILES=.depend_test .depend_lwip .depend_app
+
 clean:
-	@rm -f *.o $(LWIPLIBCOMMON) $(APPLIB) lwip_unittests *.s .depend* *.core core lwip_unittests.xml
+	@rm -f *.o $(LWIPLIBCOMMON) $(APPLIB) lwip_unittests *.s $(DEPFILES) *.core core lwip_unittests.xml
 
-depend dep: .depend
+depend dep: $(DEPFILES)
 
-include .depend
+include $(DEPFILES)
 
-.depend: $(LWIPFILES) $(APPFILES) $(TESTFILES)
-	$(CCDEP) $(CFLAGS) -MM $^ > .depend || rm -f .depend
+.depend_test: $(TESTFILES)
+	$(CCDEP) $(CFLAGS) -MM $^ > .depend_test || rm -f .depend_test
+.depend_lwip: $(LWIPFILES)
+	$(CCDEP) $(CFLAGS) -MM $^ > .depend_lwip || rm -f .depend_lwip
+.depend_app: $(APPFILES)
+	$(CCDEP) $(CFLAGS) -MM $^ > .depend_app || rm -f .depend_app
 
 ifneq ($(UNAME_S),Darwin)
 # clang on Darwin doesn't support --start-group
-lwip_unittests: .depend $(TESTOBJS) $(LWIPLIBCOMMON) $(APPLIB)
+lwip_unittests: $(DEPFILES) $(TESTOBJS) $(LWIPLIBCOMMON) $(APPLIB)
 	$(CC) $(CFLAGS) -o lwip_unittests $(TESTOBJS)  -Wl,--start-group $(LWIPLIBCOMMON) $(APPLIB) $(LDFLAGS) -Wl,--end-group
 else
-lwip_unittests: .depend $(TESTOBJS) $(LWIPLIBCOMMON) $(APPLIB)
+lwip_unittests: $(DEPFILES) $(TESTOBJS) $(LWIPLIBCOMMON) $(APPLIB)
 	$(CC) $(CFLAGS) -o lwip_unittests $(TESTOBJS) $(LWIPLIBCOMMON) $(APPLIB) $(LDFLAGS)
 endif