diff --git a/jOOQ-meta/src/main/java/org/jooq/meta/postgres/PostgresTableDefinition.java b/jOOQ-meta/src/main/java/org/jooq/meta/postgres/PostgresTableDefinition.java
index 86502d760a..0a84c44e3b 100644
--- a/jOOQ-meta/src/main/java/org/jooq/meta/postgres/PostgresTableDefinition.java
+++ b/jOOQ-meta/src/main/java/org/jooq/meta/postgres/PostgresTableDefinition.java
@@ -121,7 +121,7 @@ public class PostgresTableDefinition extends AbstractTableDefinition {
             COLUMNS.CHARACTER_MAXIMUM_LENGTH,
             when(
                 COLUMNS.UDT_NAME.in(inline("_varchar"), inline("_bpchar"), inline("_char")),
-                PG_ATTRIBUTE.ATTTYPMOD.sub(inline(4))
+                nullif(PG_ATTRIBUTE.ATTTYPMOD, inline(-1)).sub(inline(4))
             )
         );
         Field<Integer> precision = coalesce(