3 files changed, 4 insertions, 4 deletions
diff --git a/mathcomp/character/character.v b/mathcomp/character/character.v
index a657fa5..9a61ebe 100644
--- a/mathcomp/character/character.v
+++ b/mathcomp/character/character.v
@@ -576,7 +576,7 @@ Proof. by move=> i; rewrite /irr_of_socle enum_valK cast_ordK addrK. Qed.
 
 Lemma irr_of_socleK : cancel irr_of_socle W.
 Proof. by move=> Wi; rewrite /W subrK cast_ordKV enum_rankK. Qed.
-Hint Resolve socle_of_IirrK irr_of_socleK.
+Hint Resolve socle_of_IirrK irr_of_socleK : core.
 
 Lemma irr_of_socle_bij (A : pred (Iirr G)) : {on A, bijective irr_of_socle}.
 Proof. by apply: onW_bij; exists W. Qed.
diff --git a/mathcomp/character/classfun.v b/mathcomp/character/classfun.v
index 7b2b90d..a4ecd2c 100644
--- a/mathcomp/character/classfun.v
+++ b/mathcomp/character/classfun.v
@@ -759,7 +759,7 @@ Arguments classfun_on {gT} B%g A%g.
 Notation "''CF' ( G , A )" := (classfun_on G A) : ring_scope.
 
 Arguments cfun_onP {gT G A phi}.
-Hint Resolve cfun_onT.
+Hint Resolve cfun_onT : core.
 
 Section DotProduct.
 
diff --git a/mathcomp/character/mxabelem.v b/mathcomp/character/mxabelem.v
index 69055d4..22ab389 100644
--- a/mathcomp/character/mxabelem.v
+++ b/mathcomp/character/mxabelem.v
@@ -511,7 +511,7 @@ Proof. by rewrite im_abelem_rV inE. Qed.
 
 Lemma sub_im_abelem_rV mA : subset mA (mem (ErV @* E)).
 Proof. by rewrite unlock; apply/pred0P=> v /=; rewrite mem_im_abelem_rV. Qed.
-Hint Resolve mem_im_abelem_rV sub_im_abelem_rV.
+Hint Resolve mem_im_abelem_rV sub_im_abelem_rV : core.
 
 Lemma abelem_rV_1 : ErV 1 = 0%R. Proof. by rewrite morph1. Qed.
 
@@ -552,7 +552,7 @@ Proof. by rewrite -im_rVabelem mem_morphim. Qed.
 
 Lemma sub_rVabelem L : rV_E @* L \subset E.
 Proof. by rewrite -[_ @* L]morphimIim im_invm subsetIl. Qed.
-Hint Resolve mem_rVabelem sub_rVabelem.
+Hint Resolve mem_rVabelem sub_rVabelem : core.
 
 Lemma card_rVabelem L : #|rV_E @* L| = #|L|.
 Proof. by rewrite card_injm ?rVabelem_injm. Qed.