diff --git a/src/Psalm/Checker/StatementsChecker.php b/src/Psalm/Checker/StatementsChecker.php
index 799ad5a5e..e4307cdd5 100644
--- a/src/Psalm/Checker/StatementsChecker.php
+++ b/src/Psalm/Checker/StatementsChecker.php
@@ -40,6 +40,11 @@ class StatementsChecker extends SourceChecker implements StatementsSource
      */
     public static $user_constants = [];
 
+    /**
+     * @var array<string, Type\Union>
+     */
+    public static $stub_constants = [];
+
     /**
      * @param StatementsSource $source
      */
@@ -770,6 +775,10 @@ class StatementsChecker extends SourceChecker implements StatementsSource
             return ClassLikeChecker::getTypeFromValue($predefined_constants[$fq_const_name ?: $const_name]);
         }
 
+        if (isset(self::$stub_constants[$fq_const_name ?: $const_name])) {
+            return self::$stub_constants[$fq_const_name ?: $const_name];
+        }
+
         return null;
     }
 
@@ -1054,6 +1063,7 @@ class StatementsChecker extends SourceChecker implements StatementsSource
     public static function clearCache()
     {
         self::$user_constants = [];
+        self::$stub_constants = [];
 
         ExpressionChecker::clearCache();
     }
diff --git a/src/Psalm/Visitor/DependencyFinderVisitor.php b/src/Psalm/Visitor/DependencyFinderVisitor.php
index 2e17543d7..b32d2719d 100644
--- a/src/Psalm/Visitor/DependencyFinderVisitor.php
+++ b/src/Psalm/Visitor/DependencyFinderVisitor.php
@@ -355,6 +355,13 @@ class DependencyFinderVisitor extends PhpParser\NodeVisitorAbstract implements P
                     $var_type->queueClassLikesForScanning($this->project_checker);
                 }
             }
+        } elseif ($node instanceof PhpParser\Node\Stmt\Const_) {
+            if ($this->project_checker->register_global_functions) {
+                foreach ($node->consts as $const) {
+                    StatementsChecker::$stub_constants[$const->name] =
+                        StatementsChecker::getSimpleType($const->value) ?: Type::getMixed();
+                }
+            }
         }
     }