diff --git a/presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcColumnHandle.java b/presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcColumnHandle.java
index 23615baa9ea2..9e7a253fa0c6 100644
--- a/presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcColumnHandle.java
+++ b/presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcColumnHandle.java
@@ -130,10 +130,10 @@ public int hashCode()
     @Override
     public String toString()
     {
-        return Joiner.on(":").join(
+        return Joiner.on(":").skipNulls().join(
                 columnName,
                 columnType.getDisplayName(),
-                jdbcTypeHandle.getJdbcTypeName());
+                jdbcTypeHandle.getJdbcTypeName().orElse(null));
     }
 
     public static Builder builder()