diff --git a/src/Psalm/Checker/ClassLikeChecker.php b/src/Psalm/Checker/ClassLikeChecker.php
index 36767d81f..fddbd55ca 100644
--- a/src/Psalm/Checker/ClassLikeChecker.php
+++ b/src/Psalm/Checker/ClassLikeChecker.php
@@ -242,15 +242,17 @@ abstract class ClassLikeChecker extends SourceChecker implements StatementsSourc
         $interface_exists = $codebase->interfaceExists($fq_class_name);
 
         if (!$class_exists && !$interface_exists) {
-            if (IssueBuffer::accepts(
-                new UndefinedClass(
-                    'Class or interface ' . $fq_class_name . ' does not exist',
-                    $code_location,
-                    $fq_class_name
-                ),
-                $suppressed_issues
-            )) {
-                return false;
+            if (!$codebase->classlikes->traitExists($fq_class_name)) {
+                if (IssueBuffer::accepts(
+                    new UndefinedClass(
+                        'Class or interface ' . $fq_class_name . ' does not exist',
+                        $code_location,
+                        $fq_class_name
+                    ),
+                    $suppressed_issues
+                )) {
+                    return false;
+                }
             }
 
             return null;
diff --git a/src/Psalm/Codebase/ClassLikes.php b/src/Psalm/Codebase/ClassLikes.php
index 8847d1c4f..573530496 100644
--- a/src/Psalm/Codebase/ClassLikes.php
+++ b/src/Psalm/Codebase/ClassLikes.php
@@ -508,6 +508,16 @@ class ClassLikes
         return $storage->parent_interfaces;
     }
 
+    /**
+     * @param  string         $fq_trait_name
+     *
+     * @return bool
+     */
+    public function traitExists($fq_trait_name)
+    {
+        return $this->hasFullyQualifiedTraitName($fq_trait_name);
+    }
+
     /**
      * Determine whether or not a class has the correct casing
      *
diff --git a/tests/TraitTest.php b/tests/TraitTest.php
index 95fa7b594..23a43d7d1 100644
--- a/tests/TraitTest.php
+++ b/tests/TraitTest.php
@@ -522,6 +522,20 @@ class TraitTest extends TestCase
                         }
                     }',
             ],
+            'traitClassConst' => [
+                '<?php
+                    trait A {
+                        public function foo(): string {
+                            return B::class;
+                        }
+                    }
+
+                    trait B {}
+
+                    class C {
+                        use A;
+                    }'
+            ],
         ];
     }