diff --git a/src/data/pokemon/evolution.h b/src/data/pokemon/evolution.h
index f843a452c..4124c0f36 100644
--- a/src/data/pokemon/evolution.h
+++ b/src/data/pokemon/evolution.h
@@ -61,7 +61,8 @@ const struct Evolution gEvolutionTable[NUM_SPECIES][EVOS_PER_MON] =
                                        {EVO_TRADE_ITEM, ITEM_NONE,/*ITEM_KINGS_ROCK*/ SPECIES_SLOWKING}},
     [SPECIES_SLOWBRO]               = {{EVO_MEGA_EVOLUTION, ITEM_NONE,/*ITEM_SLOWBRONITE*/ SPECIES_SLOWBRO_MEGA}},
     [SPECIES_MAGNEMITE]             = {{EVO_LEVEL, 30, SPECIES_MAGNETON}},
-    [SPECIES_MAGNETON]              = {{EVO_MAP, MAPSEC_NEW_MAUVILLE, SPECIES_MAGNEZONE}},
+    [SPECIES_MAGNETON]              = {{EVO_MAP, MAPSEC_NEW_MAUVILLE, SPECIES_MAGNEZONE},
+                                       {EVO_ITEM, ITEM_NONE,/*ITEM_THUNDER_STONE*/ SPECIES_MAGNEZONE}},
     [SPECIES_DODUO]                 = {{EVO_LEVEL, 31, SPECIES_DODRIO}},
     [SPECIES_SEEL]                  = {{EVO_LEVEL, 34, SPECIES_DEWGONG}},
     [SPECIES_GRIMER]                = {{EVO_LEVEL, 38, SPECIES_MUK}},