use IllegalArgumentException

1 files changed, 1 insertions, 1 deletions

diff --git a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ReferenceNode.java b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ReferenceNode.java
index 7f6547ac516..24eed6d7f65 100755
--- a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ReferenceNode.java
+++ b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ReferenceNode.java
@@ -79,7 +79,7 @@ public final class ReferenceNode extends CompositeNode {
                 path = new ArrayDeque<>();
             String myPath = getName() + getArguments().expressions();
             if (path.contains(myPath))
-                throw new IllegalStateException("Cycle in ranking expression function '" + getName() + "' called from: " + path);
+                throw new IllegalArgumentException("Cycle in ranking expression function '" + getName() + "' called from: " + path);
             path.addLast(myPath);
 
             String functionName = getName();