diff --git a/libraries/stdlib/src/kotlin/deprecated/Deprecated.kt b/libraries/stdlib/src/kotlin/deprecated/Deprecated.kt
index 122189baf32..e51132c6459 100644
--- a/libraries/stdlib/src/kotlin/deprecated/Deprecated.kt
+++ b/libraries/stdlib/src/kotlin/deprecated/Deprecated.kt
@@ -175,3 +175,8 @@ public val Map<*, *>.empty: Boolean
 deprecated("Use isNotEmpty() function call instead")
 public val Collection<*>.notEmpty: Boolean
     get() = isNotEmpty()
+
+deprecated("Use length() instead")
+public val CharSequence.length: Int
+    get() = length()
+
diff --git a/libraries/stdlib/src/kotlin/deprecated/DeprecatedJVM.kt b/libraries/stdlib/src/kotlin/deprecated/DeprecatedJVM.kt
index b0beed1198e..7457b91375d 100644
--- a/libraries/stdlib/src/kotlin/deprecated/DeprecatedJVM.kt
+++ b/libraries/stdlib/src/kotlin/deprecated/DeprecatedJVM.kt
@@ -42,3 +42,7 @@ deprecated("Use length() instead")
 public val String.size: Int
     get() = length()
 
+deprecated("Use length() instead")
+public val CharSequence.size: Int
+    get() = length()
+
diff --git a/libraries/stdlib/src/kotlin/text/Strings.kt b/libraries/stdlib/src/kotlin/text/Strings.kt
index 3d5ba5130b4..e94d9cdd059 100644
--- a/libraries/stdlib/src/kotlin/text/Strings.kt
+++ b/libraries/stdlib/src/kotlin/text/Strings.kt
@@ -64,9 +64,6 @@ public fun String?.orEmpty(): String = this ?: ""
 public val String.indices: IntRange
     get() = 0..length() - 1
 
-public val CharSequence.length: Int
-    get() = length()
-
 public fun CharSequence.get(index: Int): Char = this.charAt(index)
 
 /**
diff --git a/libraries/stdlib/src/kotlin/text/StringsJVM.kt b/libraries/stdlib/src/kotlin/text/StringsJVM.kt
index 2ffb88e327e..2114e621252 100644
--- a/libraries/stdlib/src/kotlin/text/StringsJVM.kt
+++ b/libraries/stdlib/src/kotlin/text/StringsJVM.kt
@@ -119,9 +119,6 @@ public fun String.toLowerCase(locale: java.util.Locale): String = (this as java.
 
 public fun String.toUpperCase(locale: java.util.Locale): String = (this as java.lang.String).toUpperCase(locale)
 
-public val CharSequence.size: Int
-    get() = this.length
-
 public fun String.toBoolean(): Boolean = java.lang.Boolean.parseBoolean(this)
 public fun String.toShort(): Short = java.lang.Short.parseShort(this)
 public fun String.toInt(): Int = java.lang.Integer.parseInt(this)