diff --git a/include/pokenav.h b/include/pokenav.h
index d254858ac..69a9f1f58 100644
--- a/include/pokenav.h
+++ b/include/pokenav.h
@@ -107,7 +107,7 @@ void sub_81C8234(void);
 
 // pokenav_match_call_data.c
 bool32 sub_81D17E8(u32 idx);
-u8 sub_81D16DC(u32 idx);
+u8 MatchCallMapSecGetByIndex(u32 idx);
 bool32 sub_81D1BF8(u32 idx);
 bool32 MatchCallFlagGetByIndex(u32 idx);
 u32 MatchCall_GetRematchTableIdx(u32 idx);
diff --git a/src/pokenav_match_call_data.c b/src/pokenav_match_call_data.c
index f3bb2152f..90b1bc091 100644
--- a/src/pokenav_match_call_data.c
+++ b/src/pokenav_match_call_data.c
@@ -898,7 +898,7 @@ static bool32 MatchCallGetFlag_Type4(match_call_t matchCall)
     return FlagGet(matchCall.type3->flag);
 }
 
-u8 sub_81D16DC(u32 idx)
+u8 MatchCallMapSecGetByIndex(u32 idx)
 {
     match_call_t matchCall;
     u32 i;
diff --git a/src/pokenav_unk_3.c b/src/pokenav_unk_3.c
index bf3d82df7..9b62bea78 100755
--- a/src/pokenav_unk_3.c
+++ b/src/pokenav_unk_3.c
@@ -208,7 +208,7 @@ static u32 sub_81CAD20(s32 taskState)
             {
                 state->unk1C[state->unkA].unk2 = j;
                 state->unk1C[state->unkA].unk0 = 1;
-                state->unk1C[state->unkA].unk1 = sub_81D16DC(j);
+                state->unk1C[state->unkA].unk1 = MatchCallMapSecGetByIndex(j);
                 state->unkA++;
             }