diff --git a/packages/accounts-controller/src/typing.ts b/packages/accounts-controller/src/typing.ts
index 1160df39ab3..a90ae361289 100644
--- a/packages/accounts-controller/src/typing.ts
+++ b/packages/accounts-controller/src/typing.ts
@@ -15,7 +15,7 @@ type IsAccountControllerState<Type extends AccountsControllerState> = Type;
  */
 export type StrictInternalAccount = Omit<InternalAccount, 'options'> & {
   // Use stricter options, which are relying on `Json` (which sometimes
-  // cause compiler errors because of instanciation "too deep".
+  // cause compiler errors because of instantiation "too deep".
   // In anyway, we should rarely have to use those "untyped" options.
   options: {
     entropy?: KeyringAccountEntropyOptions;
diff --git a/packages/permission-controller/ARCHITECTURE.md b/packages/permission-controller/ARCHITECTURE.md
index 83119eed959..13dcdc53838 100644
--- a/packages/permission-controller/ARCHITECTURE.md
+++ b/packages/permission-controller/ARCHITECTURE.md
@@ -397,7 +397,7 @@ console.log(existingPermissions)
 ### Requesting permissions incrementally
 
 ```typescript
-// Given an artifically truncated permission state of:
+// Given an artificially truncated permission state of:
 // {
 //   'metamask.io': {
 //     wallet_getSecretArray: {
diff --git a/packages/permission-controller/src/PermissionController.ts b/packages/permission-controller/src/PermissionController.ts
index 78cd5584fd7..14cbf7f0f8e 100644
--- a/packages/permission-controller/src/PermissionController.ts
+++ b/packages/permission-controller/src/PermissionController.ts
@@ -280,7 +280,7 @@ export type HasPermission = {
 };
 
 /**
- * Directly grants given permissions for a specificed origin without requesting user approval
+ * Directly grants given permissions for a specified origin without requesting user approval
  */
 export type GrantPermissions = {
   type: `${typeof controllerName}:grantPermissions`;
@@ -288,7 +288,7 @@ export type GrantPermissions = {
 };
 
 /**
- * Directly grants given permissions for a specificed origin without requesting user approval
+ * Directly grants given permissions for a specified origin without requesting user approval
  */
 export type GrantPermissionsIncremental = {
   type: `${typeof controllerName}:grantPermissionsIncremental`;