diff --git a/src/data/pokemon/evolution.h b/src/data/pokemon/evolution.h
index 17a2c609b6..e9a7998505 100644
--- a/src/data/pokemon/evolution.h
+++ b/src/data/pokemon/evolution.h
@@ -222,7 +222,8 @@ const struct Evolution gEvolutionTable[NUM_SPECIES][EVOS_PER_MON] =
     [SPECIES_SKITTY]                = {{EVO_ITEM, ITEM_MOON_STONE, SPECIES_DELCATTY}},
     [SPECIES_BALTOY]                = {{EVO_LEVEL, 36, SPECIES_CLAYDOL}},
 #if P_GEN_4_POKEMON == TRUE
-    [SPECIES_NOSEPASS]              = {{EVO_MAPSEC, MAPSEC_NEW_MAUVILLE, SPECIES_PROBOPASS}},
+    [SPECIES_NOSEPASS]              = {{EVO_MAPSEC, MAPSEC_NEW_MAUVILLE, SPECIES_PROBOPASS},
+                                       {EVO_ITEM, ITEM_THUNDER_STONE, SPECIES_PROBOPASS}},
 #endif
     [SPECIES_BARBOACH]              = {{EVO_LEVEL, 30, SPECIES_WHISCASH}},
     [SPECIES_CORPHISH]              = {{EVO_LEVEL, 30, SPECIES_CRAWDAUNT}},