diff --git a/expat/Makefile.in b/expat/Makefile.in
index 8d1847f..2bade0d 100644
--- a/expat/Makefile.in
+++ b/expat/Makefile.in
@@ -157,7 +157,7 @@
 tests/runtests.o: tests/runtests.c tests/chardata.h
 tests/runtests: tests/runtests.o tests/chardata.o tests/minicheck.o $(LIBRARY)
 	$(LINK_EXE) $^
-tests/runtestspp.o: tests/runtestspp.cpp tests/chardata.h
+tests/runtestspp.o: tests/runtestspp.cpp tests/runtests.c tests/chardata.h
 tests/runtestspp: tests/runtestspp.o tests/chardata.o tests/minicheck.o $(LIBRARY)
 	$(LINK_CXX_EXE) $^