diff --git a/include/constants/battle_config.h b/include/constants/battle_config.h
index fbe87ca513..2cd9341a7d 100644
--- a/include/constants/battle_config.h
+++ b/include/constants/battle_config.h
@@ -113,6 +113,7 @@
 #define B_CAN_SPITE_FAIL            GEN_6 // In Gen4+, Spite can no longer fail if the foe's last move only has 1 remaining PP.
 #define B_CRASH_IF_TARGET_IMMUNE    GEN_6 // In Gen4+, The user of Jump Kick or Hi Jump Kick will "keep going and crash" if it attacks a target that is immune to the move.
 #define B_TAILWIND_TIMER            GEN_5 // In Gen5+, Tailwind lasts 4 turns instead of 3.
+#define B_MEMENTO_FAIL              GEN_4 // In Gen4+, memento fails if there is no target or if the target is protected or behind substitute. But not if atk/sp.atk are at -6
 
 // Ability settings
 #define B_ABILITY_WEATHER           GEN_6 // In Gen6+, ability-induced weather lasts 5 turns. Before, it lasted until the battle ended or until it was changed by a move.
diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index 14460dbe71..bebbca8acf 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -10999,9 +10999,16 @@ static void Cmd_sethail(void)
 
 static void Cmd_jumpifattackandspecialattackcannotfall(void) // memento
 {
+    #if B_MEMENTO_FAIL == GEN_3
     if (gBattleMons[gBattlerTarget].statStages[STAT_ATK] == MIN_STAT_STAGE
         && gBattleMons[gBattlerTarget].statStages[STAT_SPATK] == MIN_STAT_STAGE
         && gBattleCommunication[6] != 1)
+    #else
+    if (gBattleCommunication[6] != 1
+      || gStatuses3[gBattlerTarget] & STATUS3_SEMI_INVULNERABLE
+      || IsBattlerProtected(gBattlerTarget, gCurrentMove)
+      || DoesSubstituteBlockMove(gBattlerAttacker, gBattlerTarget, gCurrentMove))
+    #endif
     {
         gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
     }