diff --git a/adminer/drivers/mysql.inc.php b/adminer/drivers/mysql.inc.php
index 249b3dd2..8fa8e344 100644
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@@ -277,7 +277,7 @@ if (!defined("DRIVER")) {
 			return queries($prefix . implode(",\n", $values) . $suffix);
 		}
 		
-		function convertSearch($idf, $field) {
+		function convertSearch($idf, $val, $field) {
 			return (preg_match('~char|text|enum|set~', $field["type"]) && !preg_match("~^utf8~", $field["collation"])
 				? "CONVERT($idf USING " . charset($this->_conn) . ")"
 				: $idf
diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index 57961c8c..440bc1a8 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -181,6 +181,13 @@ if (isset($_GET["pgsql"])) {
 			return true;
 		}
 
+		function convertSearch($idf, $val, $field) {
+			return (preg_match('~char|text' . (is_numeric($val["val"]) && !preg_match('~LIKE~', $val["op"]) ? '|' . number_type() : '') . '~', $field["type"])
+				? $idf
+				: "CAST($idf AS text)"
+			);
+		}
+
 		function warnings() {
 			return $this->_conn->warnings();
 		}
diff --git a/adminer/include/adminer.inc.php b/adminer/include/adminer.inc.php
index 4a1f2aae..bbe43c5e 100644
--- a/adminer/include/adminer.inc.php
+++ b/adminer/include/adminer.inc.php
@@ -534,7 +534,7 @@ class Adminer {
 					$cond .= " " . $this->processInput($fields[$val["col"]], $val["val"]);
 				}
 				if ($val["col"] != "") {
-					$return[] = $prefix . $driver->convertSearch(idf_escape($val["col"]), $fields[$val["col"]]) . $cond;
+					$return[] = $prefix . $driver->convertSearch(idf_escape($val["col"]), $val, $fields[$val["col"]]) . $cond;
 				} else {
 					// find anywhere
 					$cols = array();
@@ -542,7 +542,7 @@ class Adminer {
 						if ((is_numeric($val["val"]) || !preg_match('~' . number_type() . '|bit~', $field["type"]))
 							&& (!preg_match("~[\x80-\xFF]~", $val["val"]) || preg_match('~char|text|enum|set~', $field["type"]))
 						) {
-							$cols[] = $prefix . $driver->convertSearch(idf_escape($name), $field) . $cond;
+							$cols[] = $prefix . $driver->convertSearch(idf_escape($name), $val, $field) . $cond;
 						}
 					}
 					$return[] = ($cols ? "(" . implode(" OR ", $cols) . ")" : "1 = 0");
diff --git a/adminer/include/driver.inc.php b/adminer/include/driver.inc.php
index c16481aa..4a2ae222 100644
--- a/adminer/include/driver.inc.php
+++ b/adminer/include/driver.inc.php
@@ -114,11 +114,12 @@
 	}
 	
 	/** Convert column to be searchable
-	* @param string escaped name
+	* @param string escaped column name
+	* @param array array("op" => , "val" => )
 	* @param array
 	* @return string
 	*/
-	function convertSearch($idf, $field) {
+	function convertSearch($idf, $val, $field) {
 		return $idf;
 	}
 	
diff --git a/changes.txt b/changes.txt
index d3289bcf..7cbe57c0 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,6 +1,7 @@
 Adminer 4.6.1-dev:
 MySQL: Support non-utf8 charset in search in column
 MySQL: Support geometry in MySQL 8 (bug #574)
+PostgreSQL: Cast to string when searching using LIKE (bug #325)
 PostgreSQL: Don't treat interval type as number (bug #474)
 PostgreSQL: Fix condition for selecting no rows