do not depend on Linguistics equals()

* a Linguistics object typically has no state and does not
  implement the semantics we want for equals() method.
* alternately, we could remove this check.

1 files changed, 1 insertions, 1 deletions

diff --git a/indexinglanguage/src/main/java/com/yahoo/vespa/indexinglanguage/expressions/NormalizeExpression.java b/indexinglanguage/src/main/java/com/yahoo/vespa/indexinglanguage/expressions/NormalizeExpression.java
index fa68d45d110..1a3037761c6 100644
--- a/indexinglanguage/src/main/java/com/yahoo/vespa/indexinglanguage/expressions/NormalizeExpression.java
+++ b/indexinglanguage/src/main/java/com/yahoo/vespa/indexinglanguage/expressions/NormalizeExpression.java
@@ -81,7 +81,7 @@ public final class NormalizeExpression extends Expression {
     public boolean equals(Object o) {
         if (!(o instanceof NormalizeExpression)) return false;
         NormalizeExpression other = (NormalizeExpression)o;
-        if (linguistics != other.linguistics) return false;
+        if (linguistics.getClass() != other.linguistics.getClass()) return false;
         return true;
     }