diff --git a/theories/proofmode/tactics.v b/theories/proofmode/tactics.v
index bc81eba1ede44385c729f7d62fa6c19a79ac5c80..a4dd54d35006d3604f3c78eaeae619f75ff9f09f 100644
--- a/theories/proofmode/tactics.v
+++ b/theories/proofmode/tactics.v
@@ -390,7 +390,7 @@ resolved at arbitrary moments. It seems that tactics like `apply`, `split` and
 triggered too eagerly, this tactic uses `refine` at various places instead of
 `apply`.
 
-TODO: Investigate what really is going on. Is there a related to Cog bug #5752?
+TODO: Investigate what really is going on. Is there a related to Cog bug #4969?
 When should holes in an `open_constr` be resolved?
 *)
 Local Tactic Notation "iSpecializeArgs" constr(H) open_constr(xs) :=