diff --git a/src/Standards/Generic/Sniffs/NamingConventions/InterfaceNameSuffixSniff.php b/src/Standards/Generic/Sniffs/NamingConventions/InterfaceNameSuffixSniff.php
index 637e036f1f..6dfad6b406 100644
--- a/src/Standards/Generic/Sniffs/NamingConventions/InterfaceNameSuffixSniff.php
+++ b/src/Standards/Generic/Sniffs/NamingConventions/InterfaceNameSuffixSniff.php
@@ -40,6 +40,7 @@ public function process(File $phpcsFile, $stackPtr)
     {
         $interfaceName = $phpcsFile->getDeclarationName($stackPtr);
         if ($interfaceName === null) {
+            // Live coding or parse error. Bow out.
             return;
         }