diff --git a/compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/lower/WasmVarargExpressionLowering.kt b/compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/lower/WasmVarargExpressionLowering.kt
index 953eb51dd57..02ddd368824 100644
--- a/compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/lower/WasmVarargExpressionLowering.kt
+++ b/compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/lower/WasmVarargExpressionLowering.kt
@@ -12,6 +12,7 @@ import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
 import org.jetbrains.kotlin.backend.common.lower.irComposite
 import org.jetbrains.kotlin.backend.wasm.WasmBackendContext
 import org.jetbrains.kotlin.ir.builders.*
+import org.jetbrains.kotlin.ir.declarations.IrConstructor
 import org.jetbrains.kotlin.ir.declarations.IrFile
 import org.jetbrains.kotlin.ir.declarations.IrSimpleFunction
 import org.jetbrains.kotlin.ir.declarations.IrVariable
@@ -40,8 +41,15 @@ internal class WasmVarargExpressionLowering(
             check(arrayClass.symbol in context.wasmSymbols.arrays) { "Argument ${ir2string(arrayClass)} must be an array" }
         }
 
-        val primaryConstructor
-            get() = arrayClass.primaryConstructor!!
+        val isUnsigned
+            get() = arrayClass.symbol in context.wasmSymbols.unsignedTypesToUnsignedArrays.values
+
+        val primaryConstructor: IrConstructor
+            get() {
+                if (isUnsigned)
+                    return arrayClass.constructors.find { it.valueParameters.singleOrNull()?.type == context.irBuiltIns.intType }!!
+                return arrayClass.primaryConstructor!!
+            }
         val constructors
             get() = arrayClass.constructors
 
diff --git a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArray.kt b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArray.kt
index 019e9634993..24b6ddb219c 100644
--- a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArray.kt
+++ b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArray.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun test(uis: UIntArray): String {
     var s = ""
diff --git a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayIndices.kt b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayIndices.kt
index 9beda562b42..d156f6653d8 100644
--- a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayIndices.kt
+++ b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayIndices.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun test(uis: UIntArray): String {
     var s = ""
diff --git a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayIndicesReversed.kt b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayIndicesReversed.kt
index 618df355b12..e5ae82430fd 100644
--- a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayIndicesReversed.kt
+++ b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayIndicesReversed.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun test(uis: UIntArray): String {
     var s = ""
diff --git a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayReversed.kt b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayReversed.kt
index 9170f1a5fd4..103dbefaee8 100644
--- a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayReversed.kt
+++ b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayReversed.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun test(uis: UIntArray): String {
     var s = ""
diff --git a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndex.kt b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndex.kt
index 0b2fd4c55da..5bf973f89af 100644
--- a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndex.kt
+++ b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndex.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun test(uis: UIntArray): String {
     var s = ""
diff --git a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexNoElementVar.kt b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexNoElementVar.kt
index bfbed07471a..9373ff186c9 100644
--- a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexNoElementVar.kt
+++ b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexNoElementVar.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun test(uis: UIntArray): String {
     var s = ""
diff --git a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexNoIndexVar.kt b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexNoIndexVar.kt
index 36e3d8f2958..9372e73e29a 100644
--- a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexNoIndexVar.kt
+++ b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexNoIndexVar.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun test(uis: UIntArray): String {
     var s = ""
diff --git a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexReversed.kt b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexReversed.kt
index 3e8560ad37c..8bad1d8fa73 100644
--- a/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexReversed.kt
+++ b/compiler/testData/codegen/box/arrays/forInUnsignedArray/forInUnsignedArrayWithIndexReversed.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun test(uis: UIntArray): String {
     var s = ""
diff --git a/compiler/testData/codegen/box/controlStructures/forInArray/forInInlineClassArrayWithUpcast.kt b/compiler/testData/codegen/box/controlStructures/forInArray/forInInlineClassArrayWithUpcast.kt
index 7c9e23d714d..cb01285f58c 100644
--- a/compiler/testData/codegen/box/controlStructures/forInArray/forInInlineClassArrayWithUpcast.kt
+++ b/compiler/testData/codegen/box/controlStructures/forInArray/forInInlineClassArrayWithUpcast.kt
@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: WASM
-// WASM_MUTE_REASON: UNSIGNED_ARRAYS
 // !LANGUAGE: +InlineClasses
 // WITH_RUNTIME
 
diff --git a/compiler/testData/codegen/box/inlineClasses/hiddenConstructor/kt28855.kt b/compiler/testData/codegen/box/inlineClasses/hiddenConstructor/kt28855.kt
index e92a659ed1d..2193dfc2dcc 100644
--- a/compiler/testData/codegen/box/inlineClasses/hiddenConstructor/kt28855.kt
+++ b/compiler/testData/codegen/box/inlineClasses/hiddenConstructor/kt28855.kt
@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: WASM
-// WASM_MUTE_REASON: UNSIGNED_ARRAYS
 // WITH_RUNTIME
 
 class C<T>(val x: T, vararg ys: UInt) {
diff --git a/compiler/testData/codegen/box/inlineClasses/multifileClass.kt b/compiler/testData/codegen/box/inlineClasses/multifileClass.kt
index 314b7a76689..c447a64676c 100644
--- a/compiler/testData/codegen/box/inlineClasses/multifileClass.kt
+++ b/compiler/testData/codegen/box/inlineClasses/multifileClass.kt
@@ -1,5 +1,4 @@
 // WITH_RUNTIME
-// IGNORE_BACKEND: WASM
 
 fun box(): String {
     val uia = uintArrayOf()
diff --git a/compiler/testData/codegen/box/unsignedTypes/iterateOverArrayOfUnsignedValues.kt b/compiler/testData/codegen/box/unsignedTypes/iterateOverArrayOfUnsignedValues.kt
index 45a8fc29497..6afa7243295 100644
--- a/compiler/testData/codegen/box/unsignedTypes/iterateOverArrayOfUnsignedValues.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/iterateOverArrayOfUnsignedValues.kt
@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: WASM
-// WASM_MUTE_REASON: UNSIGNED_ARRAYS
 // WITH_RUNTIME
 
 fun box(): String {
diff --git a/compiler/testData/codegen/box/unsignedTypes/unsignedArraySize.kt b/compiler/testData/codegen/box/unsignedTypes/unsignedArraySize.kt
index d1c1c4c0b3d..9be1d853537 100644
--- a/compiler/testData/codegen/box/unsignedTypes/unsignedArraySize.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/unsignedArraySize.kt
@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: WASM
-// WASM_MUTE_REASON: UNSIGNED_ARRAYS
 // WITH_RUNTIME
 
 fun test() = uintArrayOf(1u).size
diff --git a/compiler/testData/codegen/box/unsignedTypes/varargsOfUnsignedTypes.kt b/compiler/testData/codegen/box/unsignedTypes/varargsOfUnsignedTypes.kt
index 4ff7626fb19..1623b3d90ac 100644
--- a/compiler/testData/codegen/box/unsignedTypes/varargsOfUnsignedTypes.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/varargsOfUnsignedTypes.kt
@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: WASM
-// WASM_MUTE_REASON: UNSIGNED_ARRAYS
 // WITH_RUNTIME
 
 fun uint(vararg us: UInt): UIntArray = us