diff --git a/make/rules.mk b/make/rules.mk
index 474fa5bd..67507e7d 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -185,7 +185,7 @@ install_profile_path: $(INSTALLED_PROFILE_PATH_SCRIPT)
 endif
 
 depend.mk: $(SRC_ALL_CPP)
-	> $@ && makedepend -f depend.mk -- $(CPPFLAGS) $(DEPEND_CPPFLAGS) -- $(SRC_ALL_CPP)
+	> $@ && makedepend -f depend.mk -- $(CPPFLAGS) $(DEPEND_CPPFLAGS) -- $(SRC_ALL_CPP) 2>&1 | sed '/non-portable whitespace/ d'
 
 depend: depend.mk
 
@@ -209,7 +209,7 @@ tmpclean:
 	rm -rf *.tmp *.rep
 
 objclean:
-	rm -rf core core.* .*.o *.o *.a *.so *.so.*
+	rm -rf core core.* vgcore vgcore.* .*.o *.o *.a *.so *.so.*
 
 depclean:
 	rm -f depend.mk *.bak