diff --git a/PKHeX.Core/Legality/Evolutions/EvolutionChain.cs b/PKHeX.Core/Legality/Evolutions/EvolutionChain.cs
index defa89dee..8f9091252 100644
--- a/PKHeX.Core/Legality/Evolutions/EvolutionChain.cs
+++ b/PKHeX.Core/Legality/Evolutions/EvolutionChain.cs
@@ -67,7 +67,7 @@ private static EvoCriteria[][] GetChainAll(PKM pkm, IEncounterable Encounter, IE
                 // If the pokemon origin is illegal (e.g. Gen3 Infernape) the list will be emptied -- species lineage did not exist at any evolution stage.
                 while (mostEvolved.Species > maxspeciesgen)
                 {
-                    if (queue.Count == 1)
+                    if (queue.Count == 0)
                         return GensEvoChains;
                     if (mostEvolved.RequiresLvlUp)
                     {
@@ -93,7 +93,7 @@ private static EvoCriteria[][] GetChainAll(PKM pkm, IEncounterable Encounter, IE
                 {
                     if (g < 7 && pkm.Format >= 7 && mostEvolved.Form > 0)
                     {
-                        if (queue.Count == 1)
+                        if (queue.Count == 0)
                             break;
                         mostEvolved = queue.Dequeue();
                     }
diff --git a/Tests/PKHeX.Tests/Legality/Legal/Generation 2/251 - Celebi - FDB063C95344.pk7 b/Tests/PKHeX.Tests/Legality/Legal/Generation 2/251 - Celebi - FDB063C95344.pk7
new file mode 100644
index 000000000..c659db26e
Binary files /dev/null and b/Tests/PKHeX.Tests/Legality/Legal/Generation 2/251 - Celebi - FDB063C95344.pk7 differ
diff --git a/Tests/PKHeX.Tests/Legality/Legal/Generation 2/251_-_CELEBI_-_1EE8.pk2 b/Tests/PKHeX.Tests/Legality/Legal/Generation 2/251_-_CELEBI_-_1EE8.pk2
new file mode 100644
index 000000000..193563ce6
Binary files /dev/null and b/Tests/PKHeX.Tests/Legality/Legal/Generation 2/251_-_CELEBI_-_1EE8.pk2 differ