diff --git a/rules-tests/TypeDeclaration/Rector/Property/TypedPropertyFromStrictConstructorRector/Fixture/skip_protected_property_redeclared_in_child.php.inc b/rules-tests/TypeDeclaration/Rector/Property/TypedPropertyFromStrictConstructorRector/Fixture/skip_protected_property_redeclared_in_child.php.inc
new file mode 100644
index 00000000000..626a225dba5
--- /dev/null
+++ b/rules-tests/TypeDeclaration/Rector/Property/TypedPropertyFromStrictConstructorRector/Fixture/skip_protected_property_redeclared_in_child.php.inc
@@ -0,0 +1,25 @@
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\Property\TypedPropertyFromStrictConstructorRector\Fixture;
+
+use Rector\Tests\TypeDeclaration\Rector\Property\TypedPropertyFromStrictConstructorRector\Source\SomeFrame;
+
+class ParentFrameReflower
+{
+    protected $frame;
+
+    public function __construct(SomeFrame $frame)
+    {
+        $this->frame = $frame;
+    }
+}
+
+class ChildFrameReflower extends ParentFrameReflower
+{
+    protected $frame;
+
+    public function __construct(SomeFrame $frame)
+    {
+        parent::__construct($frame);
+    }
+}
diff --git a/rules-tests/TypeDeclaration/Rector/Property/TypedPropertyFromStrictConstructorRector/Source/SomeFrame.php b/rules-tests/TypeDeclaration/Rector/Property/TypedPropertyFromStrictConstructorRector/Source/SomeFrame.php
new file mode 100644
index 00000000000..69c43893caa
--- /dev/null
+++ b/rules-tests/TypeDeclaration/Rector/Property/TypedPropertyFromStrictConstructorRector/Source/SomeFrame.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\Tests\TypeDeclaration\Rector\Property\TypedPropertyFromStrictConstructorRector\Source;
+
+final class SomeFrame
+{
+}
diff --git a/rules/TypeDeclaration/Guard/PropertyTypeOverrideGuard.php b/rules/TypeDeclaration/Guard/PropertyTypeOverrideGuard.php
index 46fc3ed9738..17deec5faeb 100644
--- a/rules/TypeDeclaration/Guard/PropertyTypeOverrideGuard.php
+++ b/rules/TypeDeclaration/Guard/PropertyTypeOverrideGuard.php
@@ -19,7 +19,10 @@ public function __construct(
 
     public function isLegal(Property $property, ClassReflection $classReflection): bool
     {
-        if (! $this->makePropertyTypedGuard->isLegal($property, $classReflection)) {
+        // protected property on a non-final class may be redeclared untyped in a child class,
+        // which would cause a covariance fatal error once only the parent is typed
+        $inlinePublic = ! $property->isProtected();
+        if (! $this->makePropertyTypedGuard->isLegal($property, $classReflection, $inlinePublic)) {
             return false;
         }