diff --git a/js/js.translator/testData/box/standardClasses/charArrayGetSet.kt b/js/js.translator/testData/box/standardClasses/charArrayGetSet.kt
index 86acb5ea2ab..12781d34014 100644
--- a/js/js.translator/testData/box/standardClasses/charArrayGetSet.kt
+++ b/js/js.translator/testData/box/standardClasses/charArrayGetSet.kt
@@ -23,5 +23,21 @@ fun box(): String {
     val bType3 = jsTypeOf(b[0].asDynamic())
     if (bType3 != "number") return "fail6: $bType3"
 
+    if (a.asDynamic().constructor.name != "Uint16Array") return "fail7: ${a.asDynamic().constructor.name}"
+    if (b.asDynamic().constructor.name != "Array") return "fail8: ${b.asDynamic().constructor.name}"
+
+    val c = charArrayOf('Q')
+    val cType = jsTypeOf(c.asDynamic()[0])
+    if (cType != "number") return "fail9: $cType"
+
+    c[0] = 'W'
+    val cType2 = jsTypeOf(c.asDynamic()[0])
+    if (cType2 != "number") return "fail10: $cType2"
+
+    val cType3 = jsTypeOf(c[0].asDynamic())
+    if (cType3 != "number") return "fail11: $cType3"
+
+    if (c.asDynamic().constructor.name != "Uint16Array") return "fail12: ${c.asDynamic().constructor.name}"
+
     return "OK"
-}
\ No newline at end of file
+}
diff --git a/libraries/stdlib/js-ir/runtime/arrays.kt b/libraries/stdlib/js-ir/runtime/arrays.kt
index a4aad8d4898..6332f06553a 100644
--- a/libraries/stdlib/js-ir/runtime/arrays.kt
+++ b/libraries/stdlib/js-ir/runtime/arrays.kt
@@ -34,9 +34,11 @@ internal fun booleanArray(size: Int): BooleanArray = withType("BooleanArray", fi
 
 internal fun booleanArrayOf(arr: Array<Boolean>): BooleanArray = withType("BooleanArray", arr.asDynamic().slice()).unsafeCast<BooleanArray>()
 
-internal fun charArray(size: Int): CharArray = withType("CharArray", fillArrayVal(Array<Int>(size), 0)).unsafeCast<CharArray>()
+@Suppress("UNUSED_PARAMETER")
+internal fun charArray(size: Int): CharArray = withType("CharArray", js("new Uint16Array(size)")).unsafeCast<CharArray>()
 
-internal fun charArrayOf(arr: Array<Char>): CharArray = withType("CharArray", arr.asDynamic().slice()).unsafeCast<CharArray>()
+@Suppress("UNUSED_PARAMETER")
+internal fun charArrayOf(arr: Array<Char>): CharArray = withType("CharArray", js("new Uint16Array(arr)")).unsafeCast<CharArray>()
 
 internal fun longArray(size: Int): LongArray = withType("LongArray", fillArrayVal(Array<Long>(size), 0L)).unsafeCast<LongArray>()
 
diff --git a/libraries/stdlib/js-ir/runtime/typeCheckUtils.kt b/libraries/stdlib/js-ir/runtime/typeCheckUtils.kt
index 614e2fdb5c8..9bdd6784041 100644
--- a/libraries/stdlib/js-ir/runtime/typeCheckUtils.kt
+++ b/libraries/stdlib/js-ir/runtime/typeCheckUtils.kt
@@ -129,7 +129,7 @@ internal fun isChar(@Suppress("UNUSED_PARAMETER") c: Any): Boolean {
 internal fun isBooleanArray(a: dynamic): Boolean = isJsArray(a) && a.`$type$` === "BooleanArray"
 internal fun isByteArray(a: dynamic): Boolean = jsInstanceOf(a, js("Int8Array"))
 internal fun isShortArray(a: dynamic): Boolean = jsInstanceOf(a, js("Int16Array"))
-internal fun isCharArray(a: dynamic): Boolean = isJsArray(a) && a.`$type$` === "CharArray"
+internal fun isCharArray(a: dynamic): Boolean = jsInstanceOf(a, js("Uint16Array")) && a.`$type$` === "CharArray"
 internal fun isIntArray(a: dynamic): Boolean = jsInstanceOf(a, js("Int32Array"))
 internal fun isFloatArray(a: dynamic): Boolean = jsInstanceOf(a, js("Float32Array"))
 internal fun isDoubleArray(a: dynamic): Boolean = jsInstanceOf(a, js("Float64Array"))