diff --git a/CHANGELOG.md b/CHANGELOG.md
index c104ac7..cc865e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 v1.5
 ---
+- Fix FLEXIAPI-191 Add quotes for the pn-prid parameter in FlexisipPusherConnector
 - Fix FLEXIAPI-186 Ensure that empty objects are serialized in JSON as objects and not empty arrays
 - Fix FLEXIAPI-185 Return null if the account dictionary is empty in the API
 - Fix FLEXIAPI-184 Append phone_change_code and email_change_code to the admin /accounts/<id> endpoint if they are available
diff --git a/flexiapi/app/Libraries/FlexisipPusherConnector.php b/flexiapi/app/Libraries/FlexisipPusherConnector.php
index 9a4de55..3017e57 100644
--- a/flexiapi/app/Libraries/FlexisipPusherConnector.php
+++ b/flexiapi/app/Libraries/FlexisipPusherConnector.php
@@ -67,7 +67,7 @@ class FlexisipPusherConnector
             $command = $this->pusherPath
                 . " --pn-provider '" . $this->pnProvider . "'"
                 . " --pn-param '" . $this->pnParam . "'"
-                . " --pn-prid " . $this->pnPrid
+                . " --pn-prid '" . $this->pnPrid . "'"
                 . " --customPayload '" . $payload . "'";
 
             if (in_array($this->pnProvider, ['apns', 'apns.dev'])) {