diff --git a/dev/tools/phan/config.php b/dev/tools/phan/config.php
index 9da8c4641a4..d4057d6f060 100644
--- a/dev/tools/phan/config.php
+++ b/dev/tools/phan/config.php
@@ -442,6 +442,7 @@ return [
 		'PhanPluginRedundantAssignmentInGlobalScope',	// Not essential, a lot of false warning
 		'PhanPluginDuplicateCatchStatementBody',  // Requires PHP7.1 - 50+ occurrences
 
+		'PhanUndeclaredGlobalVariable',			// Too many false positives on .tpl.php files
 		'PhanPluginUnknownObjectMethodCall',	// False positive for some class
 	],
 	// You can put relative paths to internal stubs in this config option.
diff --git a/dev/tools/phan/config_extended.php b/dev/tools/phan/config_extended.php
index 4d828556aea..c7759f6cc65 100644
--- a/dev/tools/phan/config_extended.php
+++ b/dev/tools/phan/config_extended.php
@@ -86,6 +86,7 @@ $config['suppress_issue_types'] = [
 		'PhanPluginRedundantAssignmentInGlobalScope',	// Not essential, a lot of false warning
 		'PhanPluginDuplicateCatchStatementBody',  // Requires PHP7.1 - 50+ occurrences
 
+		'PhanUndeclaredGlobalVariable',			// Too many false positives on .tpl.php files
 		'PhanPluginUnknownObjectMethodCall',	// False positive for some class
 ];