diff --git a/WordPressVIPMinimum/Sniffs/Constants/ConstantStringSniff.php b/WordPressVIPMinimum/Sniffs/Constants/ConstantStringSniff.php
index 24a13635..d6506c8f 100644
--- a/WordPressVIPMinimum/Sniffs/Constants/ConstantStringSniff.php
+++ b/WordPressVIPMinimum/Sniffs/Constants/ConstantStringSniff.php
@@ -55,14 +55,26 @@ public function process_token( $stackPtr ) {
 			return;
 		}
 
-		$nextToken = $this->phpcsFile->findNext( Tokens::$emptyTokens, $nextToken + 1, null, true, null, true );
+		$param = $this->get_function_call_parameter( $stackPtr, 1 );
+		if ( $param === false ) {
+			// Target parameter not found.
+			return;
+		}
+
+		$search             = Tokens::$emptyTokens;
+		$search[ T_STRING ] = T_STRING;
 
-		if ( $this->tokens[ $nextToken ]['code'] !== T_CONSTANT_ENCAPSED_STRING ) {
-			$message = 'Constant name, as a string, should be used along with `%s()`.';
-			$data    = [ $this->tokens[ $stackPtr ]['content'] ];
-			$this->phpcsFile->addError( $message, $nextToken, 'NotCheckingConstantName', $data );
+		$has_only_tstring = $this->phpcsFile->findNext( $search, $param['start'], $param['end'] + 1, true );
+		if ( $has_only_tstring !== false ) {
+			// Came across something other than a T_STRING token. Ignore.
 			return;
 		}
+
+		$tstring_token = $this->phpcsFile->findNext( T_STRING, $param['start'], $param['end'] + 1 );
+
+		$message = 'Constant name, as a string, should be used along with `%s()`.';
+		$data    = [ $this->tokens[ $stackPtr ]['content'] ];
+		$this->phpcsFile->addError( $message, $tstring_token, 'NotCheckingConstantName', $data );
 	}
 
 }
diff --git a/WordPressVIPMinimum/Tests/Constants/ConstantStringUnitTest.inc b/WordPressVIPMinimum/Tests/Constants/ConstantStringUnitTest.inc
index a330da69..ec4ab2f4 100644
--- a/WordPressVIPMinimum/Tests/Constants/ConstantStringUnitTest.inc
+++ b/WordPressVIPMinimum/Tests/Constants/ConstantStringUnitTest.inc
@@ -4,6 +4,30 @@ if ( ! defined( 'WPCOM_VIP' ) ) { // Okay.
 	define( 'WPCOM_VIP', true ); // Okay.
 }
 
-if ( ! defined( WPCOM_VIP ) ) { // NOK.
-	define( WPCOM_VIP ); // NOK.
-}
\ No newline at end of file
+if ( ! defined( WPCOM_VIP ) ) { // Error.
+	define( WPCOM_VIP, true ); // Error.
+}
+
+namespace Foo\Bar;
+const REST_ALLOWED_META_PREFIXES = [ 'foo-', 'bar-', 'baz-' ];
+if ( defined( __NAMESPACE__ . '\REST_ALLOWED_META_PREFIXES' ) && in_array( 'foo-', REST_ALLOWED_META_PREFIXES, true ) ) { // Ok.
+	define( __NAMESPACE__ . '\\' . REST_ALLOWED_META_PREFIXES[1], $value ); // OK.
+}
+
+define( __NAMESPACE__ . '\PLUGIN_URL', \plugins_url( '/', __FILE__ ) ); // OK.
+if ( defined( __NAMESPACE__ . '\\LOADED' ) ) {} // OK.
+
+if ( defined( $obj->constant_name_property ) === false ) { // OK.
+   define( $variable_containing_constant_name, $constant_value ); // OK.
+}
+
+if ( defined( MY_PREFIX . '_CONSTANT_NAME' ) === false ) { // OK.
+   define( 'PREFIX_' . $variable_part, $constant_value ); // OK.
+}
+
+if ( ! defined($generator->get()) { // OK.
+	define( $generator->getLast(), 'value'); // OK.
+}
+
+$defined = defined(); // OK, ignore.
+$defined = defined( /*comment*/ ); // OK, ignore.