diff --git a/Scanner.php b/Scanner.php
index 068c249..5e85fcf 100644
--- a/Scanner.php
+++ b/Scanner.php
@@ -261,11 +261,10 @@ class Scanner extends Component
 			if ($loadFile) {
 				$before = $this->getDeclaredSymbols();
 				require_once $path;
-				$after = $this->getDeclaredSymbols();
-				$classes = array_values(array_unique(array_merge(
-					$classes,
-					array_diff($after, $before)
-				)));
+				if ($classes === []) {
+					$after = $this->getDeclaredSymbols();
+					$classes = array_values(array_diff($after, $before));
+				}
 			}
 
 			foreach ($classes as $class) {
@@ -328,7 +327,7 @@ class Scanner extends Component
 				continue;
 			}
 
-			if ($token[0] === T_CLASS && $this->isAnonymousClass($tokens, $i)) {
+			if ($token[0] === T_CLASS && ($this->isAnonymousClass($tokens, $i) || $this->isClassConstant($tokens, $i))) {
 				continue;
 			}
 
@@ -398,6 +397,19 @@ class Scanner extends Component
 		return false;
 	}
 
+	private function isClassConstant(array $tokens, int $offset): bool
+	{
+		for ($i = $offset - 1; $i >= 0; $i--) {
+			$token = $tokens[$i];
+			if (is_array($token) && in_array($token[0], [T_WHITESPACE, T_COMMENT, T_DOC_COMMENT], true)) {
+				continue;
+			}
+
+			return is_array($token) && $token[0] === T_DOUBLE_COLON;
+		}
+
+		return false;
+	}
 	private function getDeclaredSymbols(): array
 	{
 		return array_merge(get_declared_classes(), get_declared_interfaces(), get_declared_traits());