diff --git a/src/java/com/samskivert/depot/expression/EpochSeconds.java b/src/java/com/samskivert/depot/expression/EpochSeconds.java
index 1ce5f19..cdb879b 100644
--- a/src/java/com/samskivert/depot/expression/EpochSeconds.java
+++ b/src/java/com/samskivert/depot/expression/EpochSeconds.java
@@ -28,7 +28,7 @@ import com.samskivert.depot.impl.ExpressionVisitor;
 /**
  * An expression for extracting the seconds since the epoch from a date expression.
  */
-public class EpochSeconds implements SQLExpression
+public class EpochSeconds extends FluentExp
 {
     /**
      * Create a new EpochSeconds with the given argument.