diff --git a/src/Makefile b/src/Makefile
index c1dab86b..901ddd92 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -912,7 +912,7 @@ icc-profile-use:
 	EXTRACXXFLAGS='-prof_use -prof_dir ./profdir' \
 	all
 
-.depend:
+.depend: $(SRCS)
 	-@$(CXX) $(DEPENDFLAGS) -MM $(SRCS) > $@ 2> /dev/null
 
 -include .depend