diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 02126d9d2e6d..e3408e382553 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -1924,6 +1924,9 @@ stmp-fixinc: $(FIXINCLUDES) gsyslimits.h
 	      $(SHELL) $(srcdir)/$(FIXINCLUDES) include $$dir; \
 	    else true; fi; \
 	  done; \
+	  rm -f include/assert.h; \
+	  cp $(srcdir)/assert.h include/assert.h; \
+	  chmod a+r include/assert.h; \
 	else true; \
 	fi
 	rm -f include/syslimits.h