diff --git a/api/dbv1/exists.sql.go b/api/dbv1/exists.sql.go
index f0735770..148531b7 100644
--- a/api/dbv1/exists.sql.go
+++ b/api/dbv1/exists.sql.go
@@ -16,7 +16,7 @@ SELECT EXISTS(
   SELECT 1
   FROM developer_apps
   WHERE 
-    address = $1
+    address = lower($1)
     AND is_current = true
     AND is_delete = false
 )
@@ -35,7 +35,7 @@ SELECT EXISTS(
   FROM grants
   WHERE 
     user_id = $1
-    AND grantee_address = $2
+    AND grantee_address = lower($2)
     AND is_current = true
     AND is_revoked = false
 )
diff --git a/api/dbv1/queries/exists.sql b/api/dbv1/queries/exists.sql
index c65126c2..d3375e25 100644
--- a/api/dbv1/queries/exists.sql
+++ b/api/dbv1/queries/exists.sql
@@ -13,7 +13,7 @@ SELECT EXISTS(
   SELECT 1
   FROM developer_apps
   WHERE 
-    address = @address
+    address = lower(@address)
     AND is_current = true
     AND is_delete = false
 );
@@ -24,7 +24,7 @@ SELECT EXISTS(
   FROM grants
   WHERE 
     user_id = @user_id
-    AND grantee_address = @grantee_address
+    AND grantee_address = lower(@grantee_address)
     AND is_current = true
     AND is_revoked = false
 );