diff --git a/mysql-test/r/information_schema.result b/mysql-test/r/information_schema.result
index 968d42b1dc0..21b42577a11 100644
--- a/mysql-test/r/information_schema.result
+++ b/mysql-test/r/information_schema.result
@@ -1691,6 +1691,23 @@ WHERE INFORMATION_SCHEMA.COLUMNS.TABLE_NAME = 'variables';
 COLUMN_DEFAULT	TABLE_NAME
 NULL	variables
 DROP TABLE variables;
+#
+# Bug #53814: NUMERIC_PRECISION for unsigned bigint field is 19, 
+# should be 20
+#
+CREATE TABLE ubig (a BIGINT, b BIGINT UNSIGNED);
+SELECT TABLE_NAME, COLUMN_NAME, NUMERIC_PRECISION 
+FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='ubig';
+TABLE_NAME	COLUMN_NAME	NUMERIC_PRECISION
+ubig	a	19
+ubig	b	20
+INSERT INTO ubig VALUES (0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF);
+Warnings:
+Warning	1264	Out of range value for column 'a' at row 1
+SELECT length(CAST(b AS CHAR)) FROM ubig;
+length(CAST(b AS CHAR))
+20
+DROP TABLE ubig;
 End of 5.1 tests.
 #
 # Additional test for WL#3726 "DDL locking for all metadata objects"
diff --git a/mysql-test/t/information_schema.test b/mysql-test/t/information_schema.test
index b7bc662864e..87022d65fcc 100644
--- a/mysql-test/t/information_schema.test
+++ b/mysql-test/t/information_schema.test
@@ -1426,6 +1426,22 @@ FROM INFORMATION_SCHEMA.COLUMNS
 WHERE INFORMATION_SCHEMA.COLUMNS.TABLE_NAME = 'variables';
 DROP TABLE variables;
 
+--echo #
+--echo # Bug #53814: NUMERIC_PRECISION for unsigned bigint field is 19, 
+--echo # should be 20
+--echo #
+
+CREATE TABLE ubig (a BIGINT, b BIGINT UNSIGNED);
+
+SELECT TABLE_NAME, COLUMN_NAME, NUMERIC_PRECISION 
+  FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='ubig';
+
+INSERT INTO ubig VALUES (0xFFFFFFFFFFFFFFFF,0xFFFFFFFFFFFFFFFF);
+SELECT length(CAST(b AS CHAR)) FROM ubig;
+
+DROP TABLE ubig;
+
+
 --echo End of 5.1 tests.
 
 --echo #
diff --git a/sql/sql_show.cc b/sql/sql_show.cc
index 8a60dd730a3..a8ae5832a2a 100644
--- a/sql/sql_show.cc
+++ b/sql/sql_show.cc
@@ -4022,10 +4022,13 @@ void store_column_type(TABLE *table, Field *field, CHARSET_INFO *cs,
   case MYSQL_TYPE_TINY:
   case MYSQL_TYPE_SHORT:
   case MYSQL_TYPE_LONG:
-  case MYSQL_TYPE_LONGLONG:
   case MYSQL_TYPE_INT24:
     field_length= field->max_display_length() - 1;
     break;
+  case MYSQL_TYPE_LONGLONG:
+    field_length= field->max_display_length() - 
+      ((field->flags & UNSIGNED_FLAG) ? 0 : 1);
+    break;
   case MYSQL_TYPE_BIT:
     field_length= field->max_display_length();
     decimals= -1;                             // return NULL