diff --git a/openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/InformixDictionary.java b/openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/InformixDictionary.java
index b7b56c51c..9dcc9d359 100644
--- a/openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/InformixDictionary.java
+++ b/openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/InformixDictionary.java
@@ -111,7 +111,8 @@ public class InformixDictionary
         blobTypeName = "BYTE";
         doubleTypeName = "NUMERIC(32,20)";
         dateTypeName = "DATE";
-        timestampTypeName = "DATE";
+        timeTypeName = "DATETIME HOUR TO SECOND";
+        timestampTypeName = "DATETIME YEAR TO SECOND";
         doubleTypeName = "NUMERIC(32,20)";
         floatTypeName = "REAL";
         bigintTypeName = "NUMERIC(32,0)";