diff --git a/src/ast/euf/euf_egraph.h b/src/ast/euf/euf_egraph.h
index 0f5f220dc..dd6c9b9da 100644
--- a/src/ast/euf/euf_egraph.h
+++ b/src/ast/euf/euf_egraph.h
@@ -274,8 +274,7 @@ namespace euf {
         void pop(unsigned num_scopes);
 
         /**
-         * \brief Merge nodes, all effects are deferred to the propagation step. (TODO: is that comment outdated? at least in polysat::slicing it seems we almost never need to call propagate() separately.)
-         * The root of the merged class will be root(n2), unless there is a specific reason to prefer root(n1).
+           \brief merge nodes, all effects are deferred to the propagation step.
          */
         void merge(enode* n1, enode* n2, void* reason) { merge(n1, n2, justification::external(reason)); }        
         void new_diseq(enode* n);