diff --git a/core/dbengine.php b/core/dbengine.php
index d2b96be8..95ded663 100644
--- a/core/dbengine.php
+++ b/core/dbengine.php
@@ -6,7 +6,6 @@ abstract class SCORE
     const BOOL_Y    = "SCORE_BOOL_Y";
     const BOOL_N    = "SCORE_BOOL_N";
     const BOOL      = "SCORE_BOOL";
-    const ILIKE     = "SCORE_ILIKE";
 }
 
 abstract class DBEngine
@@ -54,7 +53,6 @@ class MySQL extends DBEngine
         $data = str_replace(SCORE::BOOL_Y, "'$this->BOOL_Y'", $data);
         $data = str_replace(SCORE::BOOL_N, "'$this->BOOL_N'", $data);
         $data = str_replace(SCORE::BOOL, "ENUM('Y', 'N')", $data);
-        $data = str_replace(SCORE::ILIKE, "LIKE", $data);
         return $data;
     }
 
@@ -99,7 +97,6 @@ class PostgreSQL extends DBEngine
         $data = str_replace(SCORE::BOOL_Y, $this->BOOL_Y, $data);
         $data = str_replace(SCORE::BOOL_N, $this->BOOL_N, $data);
         $data = str_replace(SCORE::BOOL, "BOOL", $data);
-        $data = str_replace(SCORE::ILIKE, "ILIKE", $data);
         return $data;
     }
 
@@ -193,7 +190,6 @@ class SQLite extends DBEngine
         $data = str_replace(SCORE::BOOL_Y, "'$this->BOOL_Y'", $data);
         $data = str_replace(SCORE::BOOL_N, "'$this->BOOL_N'", $data);
         $data = str_replace(SCORE::BOOL, "CHAR(1)", $data);
-        $data = str_replace(SCORE::ILIKE, "LIKE", $data);
         return $data;
     }
 
diff --git a/ext/not_a_tag/main.php b/ext/not_a_tag/main.php
index b9c18e93..43975956 100644
--- a/ext/not_a_tag/main.php
+++ b/ext/not_a_tag/main.php
@@ -139,11 +139,11 @@ class NotATag extends Extension
         $where = ["(1=1)"];
         $args = ["limit"=>$size, "offset"=>($page-1)*$size];
         if (!empty($_GET['tag'])) {
-            $where[] = 'tag SCORE_ILIKE :tag';
+            $where[] = 'LOWER(tag) LIKE LOWER(:tag)';
             $args["tag"] = "%".$_GET['tag']."%";
         }
         if (!empty($_GET['redirect'])) {
-            $where[] = 'redirect SCORE_ILIKE :redirect';
+            $where[] = 'LOWER(redirect) LIKE LOWER(:redirect)';
             $args["redirect"] = "%".$_GET['redirect']."%";
         }
         $where = implode(" AND ", $where);
diff --git a/ext/tag_list/main.php b/ext/tag_list/main.php
index 5b93d9b4..1c309437 100644
--- a/ext/tag_list/main.php
+++ b/ext/tag_list/main.php
@@ -283,7 +283,7 @@ class TagList extends Extension
 					FLOOR(LOG(2.7, LOG(2.7, count - :tags_min2 + 1)+1)*1.5*100)/100 AS scaled
 				FROM tags
 				WHERE count >= :tags_min
-				AND tag SCORE_ILIKE :starts_with
+				AND LOWER(tag) LIKE LOWER(:starts_with)
 				ORDER BY LOWER(tag)
 			"), ["tags_min"=>$tags_min, "tags_min2"=>$tags_min, "starts_with"=>$starts_with]);
 
@@ -326,7 +326,7 @@ class TagList extends Extension
 				SELECT tag, count
 				FROM tags
 				WHERE count >= :tags_min
-				AND tag SCORE_ILIKE :starts_with
+				AND LOWER(tag) LIKE LOWER(:starts_with)
 				ORDER BY LOWER(tag)
 				"), ["tags_min"=>$tags_min, "starts_with"=>$starts_with]);