diff --git a/plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUMethod.kt b/plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUMethod.kt
index 85fbd148fce..d4bbb1f8a07 100644
--- a/plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUMethod.kt
+++ b/plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUMethod.kt
@@ -185,6 +185,23 @@ private class UastFakeLightMethod(private val original: KtFunction, containingCl
     }
 
     override fun getParent(): PsiElement? = containingClass
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as UastFakeLightMethod
+
+        if (original != other.original) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = super.hashCode()
+        result = 31 * result + original.hashCode()
+        return result
+    }
 }
 
 class KotlinUMethodWithFakeLightDelegate(val original: KtFunction, containingLightClass: PsiClass, givenParent: UElement?) :
diff --git a/plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUMethod.kt.191 b/plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUMethod.kt.191
index d4f11d6f361..263b29e2ac5 100644
--- a/plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUMethod.kt.191
+++ b/plugins/uast-kotlin/src/org/jetbrains/uast/kotlin/declarations/KotlinUMethod.kt.191
@@ -188,6 +188,23 @@ private class UastFakeLightMethod(private val original: KtFunction, containingCl
     }
 
     override fun getParent(): PsiElement? = containingClass
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as UastFakeLightMethod
+
+        if (original != other.original) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = super.hashCode()
+        result = 31 * result + original.hashCode()
+        return result
+    }
 }
 
 class KotlinUMethodWithFakeLightDelegate(val original: KtFunction, containingLightClass: PsiClass, givenParent: UElement?) :
diff --git a/plugins/uast-kotlin/tests/KotlinUastApiTest.kt b/plugins/uast-kotlin/tests/KotlinUastApiTest.kt
index 69190e91c57..5b232cd145e 100644
--- a/plugins/uast-kotlin/tests/KotlinUastApiTest.kt
+++ b/plugins/uast-kotlin/tests/KotlinUastApiTest.kt
@@ -638,6 +638,9 @@ class KotlinUastApiTest : AbstractKotlinUastTest() {
                 function10 -> PsiType:T
                 function11 -> PsiType:T
             """.trimIndent(), methods.joinToString("\n") { m -> m.name + " -> " + m.returnType.toString() })
+            for (method in methods.drop(3)) {
+                assertEquals("assert return types comparable for '${method.name}'", method.returnType, method.returnType)
+            }
         }
     }