diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/DecompiledUtils.kt b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/DecompiledUtils.kt
index 1e6ce14cafb..e8b3f2867e9 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/DecompiledUtils.kt
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/DecompiledUtils.kt
@@ -17,7 +17,6 @@
 package org.jetbrains.kotlin.idea.decompiler
 
 import com.intellij.ide.highlighter.JavaClassFileType
-import com.intellij.openapi.util.Key
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.psi.ClassFileViewProvider
 import org.jetbrains.kotlin.idea.caches.JarUserDataManager
@@ -28,7 +27,6 @@ import org.jetbrains.kotlin.load.kotlin.KotlinBinaryClassCache
 import org.jetbrains.kotlin.load.kotlin.KotlinJvmBinaryClass
 import org.jetbrains.kotlin.load.kotlin.header.KotlinClassHeader
 import org.jetbrains.kotlin.name.ClassId
-import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
 
 /**
@@ -73,8 +71,15 @@ public fun isKotlinInternalCompiledFile(file: VirtualFile): Boolean {
     if (ClassFileViewProvider.isInnerClass(file)) {
         return true
     }
-    val header = KotlinBinaryClassCache.getKotlinBinaryClass(file)?.getClassHeader() ?: return false
-    return (header.kind == KotlinClassHeader.Kind.SYNTHETIC_CLASS && header.syntheticClassKind != KotlinSyntheticClass.Kind.PACKAGE_PART) ||
+    val header = KotlinBinaryClassCache.getKotlinBinaryClass(file)?.classHeader ?: return false
+
+    if (header.syntheticClassKind == KotlinSyntheticClass.Kind.PACKAGE_PART) {
+        // Old package parts should not be decompiled and shown anywhere
+        val version = header.version
+        return version.major < 0 || (version.major == 0 && version.minor < 24)
+    }
+
+    return header.kind == KotlinClassHeader.Kind.SYNTHETIC_CLASS ||
            (header.kind == KotlinClassHeader.Kind.CLASS && header.classKind != null && header.classKind != KotlinClass.Kind.CLASS) ||
            (header.kind == KotlinClassHeader.Kind.MULTIFILE_CLASS_PART)
 }
diff --git a/idea/tests/org/jetbrains/kotlin/idea/decompiler/textBuilder/DecompiledTextForWrongAbiVersionTest.kt b/idea/tests/org/jetbrains/kotlin/idea/decompiler/textBuilder/DecompiledTextForWrongAbiVersionTest.kt
index 99174b35600..a13d69e56aa 100644
--- a/idea/tests/org/jetbrains/kotlin/idea/decompiler/textBuilder/DecompiledTextForWrongAbiVersionTest.kt
+++ b/idea/tests/org/jetbrains/kotlin/idea/decompiler/textBuilder/DecompiledTextForWrongAbiVersionTest.kt
@@ -36,7 +36,7 @@ public class DecompiledTextForWrongAbiVersionTest : AbstractInternalCompiledClas
         return JetJdkAndLibraryProjectDescriptor(File(JetTestUtils.getTestDataPathBase() + "/cli/jvm/wrongAbiVersionLib/bin"))
     }
 
-    fun testPackagePartIsInvisibleWrongAbiVersion() = doTestNoFilesAreBuiltForSyntheticClass(PACKAGE_PART)
+    fun testPackagePartIsInvisibleWrongAbiVersion() = doTestNoPsiFilesAreBuiltForSyntheticClass(PACKAGE_PART)
 
     fun testTraitImplClassIsVisibleAsJavaClassWrongAbiVersion() = doTestTraitImplClassIsVisibleAsJavaClass()