diff --git a/rulegen.cpp b/rulegen.cpp
index 155911da..d524a444 100644
--- a/rulegen.cpp
+++ b/rulegen.cpp
@@ -136,7 +136,7 @@ void process_fix_queue() {
   in_fixing = false;
   }
 
-void ufind(twalker& p) {
+EX void ufind(twalker& p) {
   if(p.at->unified_to.at == p.at) return;
   twalker p1 = p.at->unified_to;
   ufind(p1);