--- a/browser/components/migration/tests/unit/test_Chrome_passwords.js
+++ b/browser/components/migration/tests/unit/test_Chrome_passwords.js
@@ -75,17 +75,17 @@ const TEST_LOGINS = [
     timesUsed: 1,
   },
 ];
 
 var crypto = new OSCrypto();
 var dbConn;
 
 function promiseSetPassword(login) {
-  let passwordValue = crypto.stringToArray(crypto.encryptData(login.password));
+  let passwordValue = new Uint8Array(crypto.stringToArray(crypto.encryptData(login.password)));
   return dbConn.execute(`UPDATE logins
                          SET password_value = :password_value
                          WHERE rowid = :rowid
                         `, { password_value: passwordValue,
                              rowid: login.id });
 }
 
 function checkLoginsAreEqual(passwordManagerLogin, chromeLogin, id) {

--- a/toolkit/modules/Sqlite.jsm
+++ b/toolkit/modules/Sqlite.jsm
@@ -675,17 +675,18 @@ ConnectionData.prototype = Object.freeze
    * reflection.
    */
   _bindParameters(statement, params) {
     if (!params) {
       return;
     }
 
     function bindParam(obj, key, val) {
-      let isBlob = Array.isArray(val);
+      let isBlob = val && typeof val == "object" &&
+                   val.constructor.name == "Uint8Array";
       let args = [key, val].concat(isBlob ? [val.length] : []);
       let methodName =
         `bind${isBlob ? "Blob" : ""}By${typeof key == "number" ? "Index" : "Name"}`;
       obj[methodName](...args);
     }
 
     if (Array.isArray(params)) {
       // It's an array of separate params.

--- a/toolkit/modules/tests/xpcshell/test_sqlite.js
+++ b/toolkit/modules/tests/xpcshell/test_sqlite.js
@@ -1098,25 +1098,25 @@ add_task(function* test_datatypes() {
                      real_col    REAL    NOT NULL,
                      numeric_col NUMERIC NOT NULL
                    )`);
   const bindings = [
     {
       null_col: null,
       integer_col: 12345,
       text_col: "qwerty",
-      blob_col: new Array(256).fill(undefined).map( (value, index) => index % 256 ),
+      blob_col: new Uint8Array(256).map( (value, index) => index % 256 ),
       real_col: 3.14159265359,
       numeric_col: true
     },
     {
       null_col: null,
       integer_col: -12345,
       text_col: "",
-      blob_col: new Array(256 * 2).fill(undefined).map( (value, index) => index % 256 ),
+      blob_col: new Uint8Array(256 * 2).map( (value, index) => index % 256 ),
       real_col: Number.NEGATIVE_INFINITY,
       numeric_col: false
     }
   ];
 
   yield c.execute(`INSERT INTO datatypes VALUES (
                      :null_col,
                      :integer_col,