diff --git a/jps/jps-plugin/src/org/jetbrains/kotlin/jps/incremental/ProtoCompareGenerated.kt b/jps/jps-plugin/src/org/jetbrains/kotlin/jps/incremental/ProtoCompareGenerated.kt
index 4401a64b791..12338aa078e 100644
--- a/jps/jps-plugin/src/org/jetbrains/kotlin/jps/incremental/ProtoCompareGenerated.kt
+++ b/jps/jps-plugin/src/org/jetbrains/kotlin/jps/incremental/ProtoCompareGenerated.kt
@@ -344,6 +344,11 @@ open class ProtoCompareGenerated(public val oldNameResolver: NameResolver, publi
             if (old.typeParameter != new.typeParameter) return false
         }
 
+        if (old.hasTypeParameterName() != new.hasTypeParameterName()) return false
+        if (old.hasTypeParameterName()) {
+            if (!checkStringEquals(old.typeParameterName, new.typeParameterName)) return false
+        }
+
         if (old.getExtensionCount(JvmProtoBuf.typeAnnotation) != new.getExtensionCount(JvmProtoBuf.typeAnnotation)) return false
 
         for(i in 0..old.getExtensionCount(JvmProtoBuf.typeAnnotation) - 1) {
@@ -1024,6 +1029,10 @@ public fun ProtoBuf.Type.hashCode(stringIndexes: (Int) -> Int, fqNameIndexes: (I
         hashCode = 31 * hashCode + typeParameter
     }
 
+    if (hasTypeParameterName()) {
+        hashCode = 31 * hashCode + stringIndexes(typeParameterName)
+    }
+
     for(i in 0..getExtensionCount(JvmProtoBuf.typeAnnotation) - 1) {
         hashCode = 31 * hashCode + getExtension(JvmProtoBuf.typeAnnotation, i).hashCode(stringIndexes, fqNameIndexes)
     }