diff --git a/modules/crucible-actor.js b/modules/crucible-actor.js
index c31a8ea..15a2fc3 100644
--- a/modules/crucible-actor.js
+++ b/modules/crucible-actor.js
@@ -472,6 +472,10 @@ export class CrucibleActor extends Actor {
   rollSkill(skillId) {
     let skill = this.data.items.get(skillId)
     if (skill) {
+      if (skill.data.islore && skill.data.level == 0) {
+        ui.notifications.warn("You can't use Lore Skills with a SL of 0.")
+        return
+      }
       skill = duplicate(skill)
       let abilityKey = skill.data.ability
       let rollData = this.getCommonRollData(abilityKey)
diff --git a/modules/crucible-utility.js b/modules/crucible-utility.js
index b94ff4c..bcd7b72 100644
--- a/modules/crucible-utility.js
+++ b/modules/crucible-utility.js
@@ -272,8 +272,14 @@ export class CrucibleUtility {
         level += feat.data.sl
         rollData.featSL = feat.data.sl
       }
+
       diceFormula += "+" + String(level) + "d8cs>=5"
+      if (rollData.skill.data.skilltype == "complex" && rollData.skill.data.level == 0) {
+        rollData.complexSkillDisadvantage = true
+        rollData.rollAdvantage = "roll-disadvantage"
+      }
     }
+    
     if(rollData.advantage == "advantage1") {
       diceFormula += "+ 1d10cs>=5"
     }
diff --git a/templates/chat-generic-result.html b/templates/chat-generic-result.html
index 0b54a61..62c5b5d 100644
--- a/templates/chat-generic-result.html
+++ b/templates/chat-generic-result.html
@@ -48,6 +48,10 @@
         <li>Roll with Disadvantage !</li>
         {{/if}}
 
+        {{#if complexSkillDisadvantage}}
+        <li>Roll with Disadvantage because of Complex Skill at SL 0 !</li>
+        {{/if}}
+        
         {{#if (ne featDieName "none")}}
         <li>Feature Die :  d10 ({{featDieName}})</li>
         {{/if}}