diff --git a/Source/HarmonyPatches/Worksettings/Pawn_WorkSettings_CacheWorkGiversInOrder.cs b/Source/HarmonyPatches/Worksettings/Pawn_WorkSettings_CacheWorkGiversInOrder.cs
index 752571e..319bc2c 100644
--- a/Source/HarmonyPatches/Worksettings/Pawn_WorkSettings_CacheWorkGiversInOrder.cs
+++ b/Source/HarmonyPatches/Worksettings/Pawn_WorkSettings_CacheWorkGiversInOrder.cs
@@ -59,7 +59,7 @@ public static bool Prefix( Pawn_WorkSettings __instance )
                 // lowest priority non-emergency job
                 var maxEmergPrio = allWorkgivers
                                   .Where( wg => !wg.def.emergency )
-                                  .Min( wg => pawn.GetPriority( wg.def, -1 ) );
+                                  .Min( wg => (int?)pawn.GetPriority( wg.def, -1 ) ) ?? 0;
 
                 // create lists of workgivers
                 normalWorkgivers = allWorkgivers