diff --git a/dev/tools/phan/config.php b/dev/tools/phan/config.php
index 4b41865a26d..f360c5c0cd6 100644
--- a/dev/tools/phan/config.php
+++ b/dev/tools/phan/config.php
@@ -421,6 +421,7 @@ return [
 
 		'PhanCompatibleNegativeStringOffset',	// return false positive
 		'PhanPluginConstantVariableBool',		// a lot of false positive, in most cases, we want to keep the code as it is
+		'PhanTypeObjectUnsetDeclaredProperty',
 
 		'PhanPluginWhitespaceTab',		// Dolibarr used tabs
 		'PhanPluginCanUsePHP71Void',	// Dolibarr is maintaining 7.0 compatibility
diff --git a/dev/tools/phan/config_extended.php b/dev/tools/phan/config_extended.php
index 4df133f4d11..c0a853313fe 100644
--- a/dev/tools/phan/config_extended.php
+++ b/dev/tools/phan/config_extended.php
@@ -66,6 +66,7 @@ $config['suppress_issue_types'] = [
 
 		'PhanCompatibleNegativeStringOffset',	// return false positive
 		'PhanPluginConstantVariableBool',		// a lot of false positive, in most cases, we want to keep the code as it is
+		'PhanTypeObjectUnsetDeclaredProperty',
 
 		'PhanPluginWhitespaceTab',		// Dolibarr used tabs
 		'PhanPluginCanUsePHP71Void',	// Dolibarr is maintaining 7.0 compatibility