diff --git a/htdocs/blockedlog/admin/blockedlog.php b/htdocs/blockedlog/admin/blockedlog.php
index 62a4882d4da..4b79d816843 100644
--- a/htdocs/blockedlog/admin/blockedlog.php
+++ b/htdocs/blockedlog/admin/blockedlog.php
@@ -342,6 +342,7 @@ if (GETPOST('forcegetkeyobfuscation')) {
 		print '<div class="error">'.$e->getMessage().'</div>';
 	}
 
+	$obfuscationkey = '';
 	try {
 		$obfuscationkey = $block_static->getObfuscationKey();					// Note: use the $mysoc->idprof1 and $registrationnumber. On network trouble, an Exception is thrown to the caller
 		print "\n<!-- API TO GET REMOTE OBFUSCATION KEY RETURNED result: ".$obfuscationkey." -->\n";
diff --git a/htdocs/blockedlog/class/blockedlog.class.php b/htdocs/blockedlog/class/blockedlog.class.php
index c33391093a1..5424e2c3d44 100644
--- a/htdocs/blockedlog/class/blockedlog.class.php
+++ b/htdocs/blockedlog/class/blockedlog.class.php
@@ -1604,6 +1604,7 @@ class BlockedLog
 
 			// Get the obfuscation key from ping.dolibarr.org (used just after to decode HMAC secret key)
 			$errormsg = '';
+			$obfuscationkey = '';
 			try {
 				$obfuscationkey = $this->getObfuscationKey();	// Get obfuscation key providing $mysoc->idprof1 and $registrationnumber. Note: On network trouble, an Exception is thrown to the caller
 			} catch (Exception $e) {