diff --git a/libraries/stdlib/js/src/kotlin/text/StringBuilderJs.kt b/libraries/stdlib/js/src/kotlin/text/StringBuilderJs.kt
index 806549d23da..650dfc4a559 100644
--- a/libraries/stdlib/js/src/kotlin/text/StringBuilderJs.kt
+++ b/libraries/stdlib/js/src/kotlin/text/StringBuilderJs.kt
@@ -107,7 +107,7 @@ public actual class StringBuilder public actual constructor(content: String) : A
      * and then that string was appended to this string builder.
      */
     @SinceKotlin("1.9")
-    public actual fun append(value: Byte): StringBuilder = append(value.toString())
+    public fun append(value: Byte): StringBuilder = append(value.toString())
 
     /**
      * Appends the string representation of the specified short [value] to this string builder and returns this instance.
@@ -116,7 +116,7 @@ public actual class StringBuilder public actual constructor(content: String) : A
      * and then that string was appended to this string builder.
      */
     @SinceKotlin("1.9")
-    public actual fun append(value: Short): StringBuilder = append(value.toString())
+    public fun append(value: Short): StringBuilder = append(value.toString())
 
     /**
      * Appends the string representation of the specified int [value] to this string builder and returns this instance.
@@ -264,7 +264,7 @@ public actual class StringBuilder public actual constructor(content: String) : A
      * @throws IndexOutOfBoundsException if [index] is less than zero or greater than the length of this string builder.
      */
     @SinceKotlin("1.9")
-    public actual fun insert(index: Int, value: Byte): StringBuilder = insert(index, value.toString())
+    public fun insert(index: Int, value: Byte): StringBuilder = insert(index, value.toString())
 
     /**
      * Inserts the string representation of the specified short [value] into this string builder at the specified [index] and returns this instance.
@@ -275,7 +275,7 @@ public actual class StringBuilder public actual constructor(content: String) : A
      * @throws IndexOutOfBoundsException if [index] is less than zero or greater than the length of this string builder.
      */
     @SinceKotlin("1.9")
-    public actual fun insert(index: Int, value: Short): StringBuilder = insert(index, value.toString())
+    public fun insert(index: Int, value: Short): StringBuilder = insert(index, value.toString())
 
     /**
      * Inserts the string representation of the specified int [value] into this string builder at the specified [index] and returns this instance.
diff --git a/libraries/stdlib/native-wasm/src/kotlin/text/StringBuilder.kt b/libraries/stdlib/native-wasm/src/kotlin/text/StringBuilder.kt
index 57a43989326..93b9965ce02 100644
--- a/libraries/stdlib/native-wasm/src/kotlin/text/StringBuilder.kt
+++ b/libraries/stdlib/native-wasm/src/kotlin/text/StringBuilder.kt
@@ -158,7 +158,7 @@ private constructor (private var array: CharArray) : CharSequence, Appendable {
      * The overall effect is exactly as if the [value] were converted to a string by the `value.toString()` method,
      * and then that string was appended to this string builder.
      */
-    public actual fun append(value: Byte): StringBuilder = append(value.toString())
+    public fun append(value: Byte): StringBuilder = append(value.toString())
 
     /**
      * Appends the string representation of the specified short [value] to this string builder and returns this instance.
@@ -166,7 +166,7 @@ private constructor (private var array: CharArray) : CharSequence, Appendable {
      * The overall effect is exactly as if the [value] were converted to a string by the `value.toString()` method,
      * and then that string was appended to this string builder.
      */
-    public actual fun append(value: Short): StringBuilder = append(value.toString())
+    public fun append(value: Short): StringBuilder = append(value.toString())
 
     /**
      * Appends the string representation of the specified int [value] to this string builder and returns this instance.
@@ -312,7 +312,7 @@ private constructor (private var array: CharArray) : CharSequence, Appendable {
      *
      * @throws IndexOutOfBoundsException if [index] is less than zero or greater than the length of this string builder.
      */
-    public actual fun insert(index: Int, value: Byte): StringBuilder = insert(index, value.toString())
+    public fun insert(index: Int, value: Byte): StringBuilder = insert(index, value.toString())
 
     /**
      * Inserts the string representation of the specified short [value] into this string builder at the specified [index] and returns this instance.
@@ -322,7 +322,7 @@ private constructor (private var array: CharArray) : CharSequence, Appendable {
      *
      * @throws IndexOutOfBoundsException if [index] is less than zero or greater than the length of this string builder.
      */
-    public actual fun insert(index: Int, value: Short): StringBuilder = insert(index, value.toString())
+    public fun insert(index: Int, value: Short): StringBuilder = insert(index, value.toString())
 
     /**
      * Inserts the string representation of the specified int [value] into this string builder at the specified [index] and returns this instance.
diff --git a/libraries/stdlib/src/kotlin/text/StringBuilder.kt b/libraries/stdlib/src/kotlin/text/StringBuilder.kt
index 9bd6a469cff..5ecf8293454 100644
--- a/libraries/stdlib/src/kotlin/text/StringBuilder.kt
+++ b/libraries/stdlib/src/kotlin/text/StringBuilder.kt
@@ -69,24 +69,6 @@ public expect class StringBuilder : Appendable, CharSequence {
     @SinceKotlin("1.3")
     public fun append(value: Boolean): StringBuilder
 
-    /**
-     * Appends the string representation of the specified byte [value] to this string builder and returns this instance.
-     *
-     * The overall effect is exactly as if the [value] were converted to a string by the `value.toString()` method,
-     * and then that string was appended to this string builder.
-     */
-    @SinceKotlin("1.9")
-    public fun append(value: Byte): StringBuilder
-
-    /**
-     * Appends the string representation of the specified short [value] to this string builder and returns this instance.
-     *
-     * The overall effect is exactly as if the [value] were converted to a string by the `value.toString()` method,
-     * and then that string was appended to this string builder.
-     */
-    @SinceKotlin("1.9")
-    public fun append(value: Short): StringBuilder
-
     /**
      * Appends the string representation of the specified int [value] to this string builder and returns this instance.
      *
@@ -204,28 +186,6 @@ public expect class StringBuilder : Appendable, CharSequence {
     @SinceKotlin("1.4")
     public fun insert(index: Int, value: Boolean): StringBuilder
 
-    /**
-     * Inserts the string representation of the specified byte [value] into this string builder at the specified [index] and returns this instance.
-     *
-     * The overall effect is exactly as if the [value] were converted to a string by the `value.toString()` method,
-     * and then that string was inserted into this string builder at the specified [index].
-     *
-     * @throws IndexOutOfBoundsException if [index] is less than zero or greater than the length of this string builder.
-     */
-    @SinceKotlin("1.9")
-    public fun insert(index: Int, value: Byte): StringBuilder
-
-    /**
-     * Inserts the string representation of the specified short [value] into this string builder at the specified [index] and returns this instance.
-     *
-     * The overall effect is exactly as if the [value] were converted to a string by the `value.toString()` method,
-     * and then that string was inserted into this string builder at the specified [index].
-     *
-     * @throws IndexOutOfBoundsException if [index] is less than zero or greater than the length of this string builder.
-     */
-    @SinceKotlin("1.9")
-    public fun insert(index: Int, value: Short): StringBuilder
-
     /**
      * Inserts the string representation of the specified int [value] into this string builder at the specified [index] and returns this instance.
      *