diff --git a/x-pack/plugin/esql-core/src/main/java/org/elasticsearch/xpack/esql/core/expression/Expression.java b/x-pack/plugin/esql-core/src/main/java/org/elasticsearch/xpack/esql/core/expression/Expression.java
index fa9d24a523cbf..b254612a700df 100644
--- a/x-pack/plugin/esql-core/src/main/java/org/elasticsearch/xpack/esql/core/expression/Expression.java
+++ b/x-pack/plugin/esql-core/src/main/java/org/elasticsearch/xpack/esql/core/expression/Expression.java
@@ -87,7 +87,7 @@ public boolean foldable() {
 
     /**
      * Evaluate this expression statically to a constant. It is an error to call
-     * this if {@link #foldable} return false.
+     * this if {@link #foldable} returns false.
      */
     public Object fold(FoldContext ctx) {
         // TODO After removing FoldContext.unbounded from non-test code examine all calls