diff --git a/srcpkgs/olsrd/patches/bison-header.patch b/srcpkgs/olsrd/patches/bison-header.patch
new file mode 100644
index 00000000000..882edeef007
--- /dev/null
+++ b/srcpkgs/olsrd/patches/bison-header.patch
@@ -0,0 +1,10 @@
+--- src/cfgparser/local.mk.orig	2020-11-21 14:03:26.244348554 +0700
++++ src/cfgparser/local.mk	2020-11-21 14:06:09.976236365 +0700
+@@ -77,6 +77,7 @@
+ 	$(MAKECMDPREFIX)$(BISON) -d -o "$@-tmp" "$<"
+ 	$(MAKECMDPREFIX)sed	-e 's/register //' \
+ 		-e '/^#line/s/$(call quote,$@-tmp)/$(call quote,$@)/' \
++		-e '/include.*h-tmp/s/-tmp"$$/"/' \
+ 		< "$@-tmp" >"$@"
+ 	$(MAKECMDPREFIX)mv "$(subst .c,.h,$@-tmp)" "$(subst .c,.h,$@)"
+ 	$(MAKECMDPREFIX)$(RM) "$@-tmp" "$(subst .c,.h,$@-tmp)"