diff --git a/src/main/java/org/betonquest/betonquest/conditions/BaseNumberCompareCondition.java b/src/main/java/org/betonquest/betonquest/conditions/BaseNumberCompareCondition.java
index fb65ead512..3ae5370f22 100644
--- a/src/main/java/org/betonquest/betonquest/conditions/BaseNumberCompareCondition.java
+++ b/src/main/java/org/betonquest/betonquest/conditions/BaseNumberCompareCondition.java
@@ -27,8 +27,9 @@ protected BaseNumberCompareCondition(final Instruction instruction) {
      * @param profile the profile to get the number from
      * @return the number
      * @throws QuestRuntimeException when the number cannot be parsed
+     * @throws IllegalStateException when getting the number fails caused by an invalid state that should cause the condition to be false
      */
-    protected abstract Double getFirst(Profile profile) throws QuestRuntimeException;
+    protected abstract Double getFirst(Profile profile) throws QuestRuntimeException, IllegalStateException;
 
     /**
      * Get the second number.
@@ -36,8 +37,9 @@ protected BaseNumberCompareCondition(final Instruction instruction) {
      * @param profile the profile to get the number from
      * @return the number
      * @throws QuestRuntimeException when the number cannot be parsed
+     * @throws IllegalStateException when getting the number fails caused by an invalid state that should cause the condition to be false
      */
-    protected abstract Double getSecond(Profile profile) throws QuestRuntimeException;
+    protected abstract Double getSecond(Profile profile) throws QuestRuntimeException, IllegalStateException;
 
     /**
      * Get the operation.
@@ -67,7 +69,11 @@ protected Operation fromSymbol(final String symbol) throws InstructionParseExcep
 
     @Override
     protected Boolean execute(final Profile profile) throws QuestRuntimeException {
-        return getOperation().compare.check(getFirst(profile), getSecond(profile));
+        try {
+            return getOperation().compare.check(getFirst(profile), getSecond(profile));
+        } catch (final IllegalStateException e) {
+            return false;
+        }
     }
 
     /**
diff --git a/src/main/java/org/betonquest/betonquest/conditions/StageCondition.java b/src/main/java/org/betonquest/betonquest/conditions/StageCondition.java
index 7a0e2c8570..55caa73b8a 100644
--- a/src/main/java/org/betonquest/betonquest/conditions/StageCondition.java
+++ b/src/main/java/org/betonquest/betonquest/conditions/StageCondition.java
@@ -50,13 +50,22 @@ protected Double getFirst(final Profile profile) throws QuestRuntimeException {
         if (stage.getData(profile) == null) {
             return -1.0;
         }
-        return (double) stage.getStageIndex(stage.getStage(profile)); // TODO return false for invalid stages
+        try {
+            return (double) stage.getStageIndex(stage.getStage(profile));
+        } catch (final QuestRuntimeException e) {
+            throw new IllegalStateException(profile + " has an invalid stage");
+        }
     }
 
     @Override
     protected Double getSecond(final Profile profile) throws QuestRuntimeException {
         final StageObjective stage = getStageObjective();
-        return (double) stage.getStageIndex(second.getString(profile)); // TODO return false for invalid stages
+        final String targetState = second.getString(profile);
+        try {
+            return (double) stage.getStageIndex(targetState);
+        } catch (final QuestRuntimeException e) {
+            throw new IllegalStateException("The stage " + targetState + "' does not exist");
+        }
     }
 
     @Override