diff --git a/src/Collector/ClassMethod/PublicClassMethodParamTypesCollector.php b/src/Collector/ClassMethod/PublicClassMethodParamTypesCollector.php
index 6cc4e4e8..39f47742 100644
--- a/src/Collector/ClassMethod/PublicClassMethodParamTypesCollector.php
+++ b/src/Collector/ClassMethod/PublicClassMethodParamTypesCollector.php
@@ -65,7 +65,7 @@ public function processNode(Node $node, Scope $scope): ?array
             return null;
         }
 
-        $printedParamTypesString = $this->collectorMetadataPrinter->printParamTypesToString($node);
+        $printedParamTypesString = $this->collectorMetadataPrinter->printParamTypesToString($node, $classReflection->getName());
         return [$classReflection->getName(), $methodName, $printedParamTypesString, $node->getLine()];
     }
 }
diff --git a/src/Printer/CollectorMetadataPrinter.php b/src/Printer/CollectorMetadataPrinter.php
index 38915f8c..ef41d476 100644
--- a/src/Printer/CollectorMetadataPrinter.php
+++ b/src/Printer/CollectorMetadataPrinter.php
@@ -4,9 +4,12 @@
 
 namespace Rector\TypePerfect\Printer;
 
+use PhpParser\Node;
 use PhpParser\Node\Expr\MethodCall;
 use PhpParser\Node\Identifier;
 use PhpParser\Node\IntersectionType as NodeIntersectionType;
+use PhpParser\Node\Name;
+use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\NullableType;
 use PhpParser\Node\Stmt\ClassMethod;
 use PhpParser\Node\UnionType;
@@ -65,7 +68,7 @@ public function printArgTypesAsString(MethodCall $methodCall, Scope $scope): str
         return implode('|', $stringArgTypes);
     }
 
-    public function printParamTypesToString(ClassMethod $classMethod): string
+    public function printParamTypesToString(ClassMethod $classMethod, ?string $className): string
     {
         $printedParamTypes = [];
         foreach ($classMethod->params as $param) {
@@ -74,14 +77,14 @@ public function printParamTypesToString(ClassMethod $classMethod): string
                 continue;
             }
 
-            $paramType = $param->type;
+            $paramType = $this->transformSelfToClassName($param->type, $className);
             if ($paramType instanceof NullableType) {
                 // unite to phpstan type
                 $paramType = new UnionType([$paramType->type, new Identifier('null')]);
             }
 
             if ($paramType instanceof UnionType) {
-                $paramType = $this->resolveSortedUnionType($paramType);
+                $paramType = $this->resolveSortedUnionType($paramType, $className);
             }
 
             $printedParamType = $this->printerStandard->prettyPrint([$paramType]);
@@ -94,19 +97,36 @@ public function printParamTypesToString(ClassMethod $classMethod): string
         return implode('|', $printedParamTypes);
     }
 
-    private function resolveSortedUnionType(UnionType $unionType): UnionType
+    private function transformSelfToClassName(Node $node, ?string $className): Node
+    {
+        if (! $node instanceof Name || $className === null) {
+            return $node;
+        }
+
+        if ($node->toString() !== 'self') {
+            return $node;
+        }
+
+        return new FullyQualified($className);
+    }
+
+    private function resolveSortedUnionType(UnionType $unionType, ?string $className): UnionType
     {
         $typeNames = [];
 
         foreach ($unionType->types as $type) {
             if ($type instanceof NodeIntersectionType) {
                 foreach ($type->types as $intersectionType) {
+                    /** @var FullyQualified $intersectionType */
+                    $intersectionType = $this->transformSelfToClassName($intersectionType, $className);
                     $typeNames[] = (string) $intersectionType;
                 }
 
                 continue;
             }
 
+            /** @var FullyQualified $type */
+            $type = $this->transformSelfToClassName($type, $className);
             $typeNames[] = (string) $type;
         }
 
diff --git a/src/Rules/NarrowPublicClassMethodParamTypeRule.php b/src/Rules/NarrowPublicClassMethodParamTypeRule.php
index e27ed0ec..a9fe50ef 100644
--- a/src/Rules/NarrowPublicClassMethodParamTypeRule.php
+++ b/src/Rules/NarrowPublicClassMethodParamTypeRule.php
@@ -151,9 +151,9 @@ private function resolveUniqueArgTypesString(
     private function flattenCollectedData(array $methodCallablesByFilePath): array
     {
         $methodFirstClassCallables = [];
-        foreach ($methodCallablesByFilePath as $collectedData) {
-            foreach ($collectedData as $collectedItem) {
-                $methodFirstClassCallables[] = $collectedItem[0];
+        foreach ($methodCallablesByFilePath as $methodCallables) {
+            foreach ($methodCallables as $methodCallable) {
+                $methodFirstClassCallables[] = $methodCallable[0];
             }
         }
 
diff --git a/tests/Rules/NarrowPublicClassMethodParamTypeRule/Fixture/SkipSelf.php b/tests/Rules/NarrowPublicClassMethodParamTypeRule/Fixture/SkipSelf.php
new file mode 100644
index 00000000..f979c8e3
--- /dev/null
+++ b/tests/Rules/NarrowPublicClassMethodParamTypeRule/Fixture/SkipSelf.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\TypePerfect\Tests\Rules\NarrowPublicClassMethodParamTypeRule\Fixture;
+
+class SkipSelf {
+    public function takesSelf(self $code): bool
+    {
+        return true;
+    }
+
+    static public function run(SkipSelf $self): void
+    {
+        $self->takesSelf(new SkipSelf());
+    }
+}
diff --git a/tests/Rules/NarrowPublicClassMethodParamTypeRule/NarrowPublicClassMethodParamTypeRuleTest.php b/tests/Rules/NarrowPublicClassMethodParamTypeRule/NarrowPublicClassMethodParamTypeRuleTest.php
index 7478cd40..ebbc2f5c 100644
--- a/tests/Rules/NarrowPublicClassMethodParamTypeRule/NarrowPublicClassMethodParamTypeRuleTest.php
+++ b/tests/Rules/NarrowPublicClassMethodParamTypeRule/NarrowPublicClassMethodParamTypeRuleTest.php
@@ -140,6 +140,10 @@ public static function provideData(): Iterator
             __DIR__ . '/Fixture/ThisPassedFromInterface.php',
             __DIR__ . '/Source/ExpectedThisType/CallByThisFromInterface.php',
         ], [[$argErrorMessage, 11]]];
+
+        yield [[
+            __DIR__ . '/Fixture/SkipSelf.php',
+        ], []];
     }
 
     /**