diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobosses/bosses/EggDisplay.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobosses/bosses/EggDisplay.kt
index 56e5997..eefc251 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobosses/bosses/EggDisplay.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobosses/bosses/EggDisplay.kt
@@ -27,8 +27,9 @@ class EggDisplay(
 
         val lines = egg.spawnConditions
             .filterNot { it.isMet(player) }
-            .map { it.notMetLines }
-            .map { Display.PREFIX + it }
+            .mapNotNull { it.notMetLines?.map { line -> Display.PREFIX + line } }
+            .flatten()
+
 
         if (lines.isNotEmpty()) {
             lore.add(Display.PREFIX)