diff --git a/src/Reflection/Native/NativeMethodReflection.php b/src/Reflection/Native/NativeMethodReflection.php
index 9c6434286b..3112fefa48 100644
--- a/src/Reflection/Native/NativeMethodReflection.php
+++ b/src/Reflection/Native/NativeMethodReflection.php
@@ -72,6 +72,10 @@ public function getPrototype(): ClassMemberReflection
 				$prototypeDeclaringClass = $this->reflectionProvider->getClass($prototypeMethod->getDeclaringClass()->getName());
 			}
 
+			if (!$prototypeDeclaringClass->hasNativeMethod($prototypeMethod->getName())) {
+				return $this;
+			}
+
 			$tentativeReturnType = null;
 			if ($prototypeMethod->getTentativeReturnType() !== null) {
 				$tentativeReturnType = TypehintHelper::decideTypeFromReflection($prototypeMethod->getTentativeReturnType());
diff --git a/src/Reflection/Php/PhpMethodReflection.php b/src/Reflection/Php/PhpMethodReflection.php
index c0e5a7dfec..0fba6c34ce 100644
--- a/src/Reflection/Php/PhpMethodReflection.php
+++ b/src/Reflection/Php/PhpMethodReflection.php
@@ -115,6 +115,10 @@ public function getPrototype(): ClassMemberReflection
 				$prototypeDeclaringClass = $this->reflectionProvider->getClass($prototypeMethod->getDeclaringClass()->getName());
 			}
 
+			if (!$prototypeDeclaringClass->hasNativeMethod($prototypeMethod->getName())) {
+				return $this;
+			}
+
 			$tentativeReturnType = null;
 			if ($prototypeMethod->getTentativeReturnType() !== null) {
 				$tentativeReturnType = TypehintHelper::decideTypeFromReflection($prototypeMethod->getTentativeReturnType());