diff --git a/platform/util/base/multiplatform/src/com/intellij/util/text/CharArrayCharSequence.kt b/platform/util/base/multiplatform/src/com/intellij/util/text/CharArrayCharSequence.kt
index 0ff911b2490f..f4600ec5797b 100644
--- a/platform/util/base/multiplatform/src/com/intellij/util/text/CharArrayCharSequence.kt
+++ b/platform/util/base/multiplatform/src/com/intellij/util/text/CharArrayCharSequence.kt
@@ -6,6 +6,7 @@ import com.intellij.openapi.util.text.stringHashCode
 import com.intellij.util.text.CharArrayUtilKmp.regionMatches
 import kotlin.math.min
 import kotlin.jvm.JvmField
+import kotlin.jvm.Transient
 
 open class CharArrayCharSequence(
   @JvmField protected val myChars: CharArray,
diff --git a/platform/util/base/multiplatform/src/com/intellij/util/text/CharSequenceSubSequence.kt b/platform/util/base/multiplatform/src/com/intellij/util/text/CharSequenceSubSequence.kt
index b9eeb4f0493a..67438b3ef77e 100644
--- a/platform/util/base/multiplatform/src/com/intellij/util/text/CharSequenceSubSequence.kt
+++ b/platform/util/base/multiplatform/src/com/intellij/util/text/CharSequenceSubSequence.kt
@@ -5,6 +5,7 @@ import com.intellij.openapi.util.text.CharSequenceWithStringHash
 import com.intellij.openapi.util.text.stringHashCode
 import com.intellij.util.text.CharArrayUtilKmp.fromSequence
 import com.intellij.util.text.CharArrayUtilKmp.getChars
+import kotlin.jvm.Transient
 
 /**
  * `CharSequenceSubSequence` allows to save time and memory in text processing code. It avoids