diff --git a/idea/idea-completion/testData/smart/inheritors/GenericClass2.kt b/idea/idea-completion/testData/smart/inheritors/GenericClass2.kt
index c84b4963942..ba5f828875e 100644
--- a/idea/idea-completion/testData/smart/inheritors/GenericClass2.kt
+++ b/idea/idea-completion/testData/smart/inheritors/GenericClass2.kt
@@ -14,5 +14,11 @@ fun bar() {
 // EXIST: { itemText: "object: C1<...>(){...}" }
 // EXIST: { itemText: "object: C2(){...}" }
 // EXIST: { itemText: "object: C3(){...}" }
+
+// all these items shouldn't be proposed, see KT-15479
 // EXIST: { itemText: "enumValueOf" }
+// EXIST: { itemText: "maxOf", tailText: "(a: T, b: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "maxOf", tailText: "(a: T, b: T, c: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "minOf", tailText: "(a: T, b: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "minOf", tailText: "(a: T, b: T, c: T) (kotlin.comparisons)" }
 // NOTHING_ELSE
diff --git a/idea/idea-completion/testData/smart/inheritors/GenericClass3.kt b/idea/idea-completion/testData/smart/inheritors/GenericClass3.kt
index 52036982ef3..12896bc5652 100644
--- a/idea/idea-completion/testData/smart/inheritors/GenericClass3.kt
+++ b/idea/idea-completion/testData/smart/inheritors/GenericClass3.kt
@@ -15,5 +15,11 @@ fun bar() {
 // EXIST: { itemText: "object: C1<...>(){...}" }
 // EXIST: { itemText: "object: C2(){...}" }
 // EXIST: { itemText: "object: C4<String>(){...}" }
+
+// all these items shouldn't be proposed, see KT-15479
 // EXIST: { itemText: "enumValueOf" }
+// EXIST: { itemText: "maxOf", tailText: "(a: T, b: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "maxOf", tailText: "(a: T, b: T, c: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "minOf", tailText: "(a: T, b: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "minOf", tailText: "(a: T, b: T, c: T) (kotlin.comparisons)" }
 // NOTHING_ELSE
diff --git a/idea/idea-completion/testData/smart/inheritors/GenericClass4.kt b/idea/idea-completion/testData/smart/inheritors/GenericClass4.kt
index 3a24b32c87e..12d861ca5e6 100644
--- a/idea/idea-completion/testData/smart/inheritors/GenericClass4.kt
+++ b/idea/idea-completion/testData/smart/inheritors/GenericClass4.kt
@@ -10,5 +10,11 @@ fun bar() {
 
 // EXIST: { itemText: "object: I<...>{...}" }
 // EXIST: { itemText: "object: C<...>(){...}" }
+
+// all these items shouldn't be proposed, see KT-15479
 // EXIST: { itemText: "enumValueOf" }
+// EXIST: { itemText: "maxOf", tailText: "(a: T, b: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "maxOf", tailText: "(a: T, b: T, c: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "minOf", tailText: "(a: T, b: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "minOf", tailText: "(a: T, b: T, c: T) (kotlin.comparisons)" }
 // NOTHING_ELSE
diff --git a/idea/idea-completion/testData/smart/inheritors/GenericClass6.kt b/idea/idea-completion/testData/smart/inheritors/GenericClass6.kt
index 7fa7aa17423..ef2a74a9919 100644
--- a/idea/idea-completion/testData/smart/inheritors/GenericClass6.kt
+++ b/idea/idea-completion/testData/smart/inheritors/GenericClass6.kt
@@ -17,5 +17,11 @@ fun bar() {
 // EXIST: { itemText: "object: I<...>{...}" }
 // EXIST: { itemText: "object: C1<X>(){...}" }
 // EXIST: { itemText: "object: C2(){...}" }
+
+// all these items shouldn't be proposed, see KT-15479
 // EXIST: { itemText: "enumValueOf" }
+// EXIST: { itemText: "maxOf", tailText: "(a: T, b: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "maxOf", tailText: "(a: T, b: T, c: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "minOf", tailText: "(a: T, b: T) (kotlin.comparisons)" }
+// EXIST: { itemText: "minOf", tailText: "(a: T, b: T, c: T) (kotlin.comparisons)" }
 // NOTHING_ELSE