diff --git a/src/Reflection/Type/IntersectionTypePropertyReflection.php b/src/Reflection/Type/IntersectionTypePropertyReflection.php
index b85dfda0d8..953abed228 100644
--- a/src/Reflection/Type/IntersectionTypePropertyReflection.php
+++ b/src/Reflection/Type/IntersectionTypePropertyReflection.php
@@ -209,7 +209,7 @@ public function isDummy(): TrinaryLogic
 	{
 		// uses method typical for unions
 		// because for this to return yes(), all methods should be dummy
-		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isAbstract());
+		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isDummy());
 	}
 
 }
diff --git a/src/Reflection/Type/UnionTypePropertyReflection.php b/src/Reflection/Type/UnionTypePropertyReflection.php
index a02751d0d4..33eb2a6824 100644
--- a/src/Reflection/Type/UnionTypePropertyReflection.php
+++ b/src/Reflection/Type/UnionTypePropertyReflection.php
@@ -207,7 +207,7 @@ public function getAttributes(): array
 
 	public function isDummy(): TrinaryLogic
 	{
-		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isAbstract());
+		return TrinaryLogic::lazyExtremeIdentity($this->properties, static fn (ExtendedPropertyReflection $propertyReflection): TrinaryLogic => $propertyReflection->isDummy());
 	}
 
 }