diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CocoaPodsIT.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CocoaPodsIT.kt
index 7d50d6b448d..22eb9cf3fea 100644
--- a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CocoaPodsIT.kt
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CocoaPodsIT.kt
@@ -1270,7 +1270,7 @@ class CocoaPodsIT : BaseGradleIT() {
                     spec.pod_target_xcconfig = {
                         'KOTLIN_TARGET[sdk=iphonesimulator*]' => 'ios_x64',
                         'KOTLIN_TARGET[sdk=iphoneos*]' => 'ios_arm',
-                        'KOTLIN_TARGET[sdk=watchsimulator*]' => 'watchos_x86',
+                        'KOTLIN_TARGET[sdk=watchsimulator*]' => 'watchos_x64',
                         'KOTLIN_TARGET[sdk=watchos*]' => 'watchos_arm',
                         'KOTLIN_TARGET[sdk=appletvsimulator*]' => 'tvos_x64',
                         'KOTLIN_TARGET[sdk=appletvos*]' => 'tvos_arm64',
@@ -1312,7 +1312,7 @@ class CocoaPodsIT : BaseGradleIT() {
                     spec.pod_target_xcconfig = {
                         'KOTLIN_TARGET[sdk=iphonesimulator*]' => 'ios_x64',
                         'KOTLIN_TARGET[sdk=iphoneos*]' => 'ios_arm',
-                        'KOTLIN_TARGET[sdk=watchsimulator*]' => 'watchos_x86',
+                        'KOTLIN_TARGET[sdk=watchsimulator*]' => 'watchos_x64',
                         'KOTLIN_TARGET[sdk=watchos*]' => 'watchos_arm',
                         'KOTLIN_TARGET[sdk=appletvsimulator*]' => 'tvos_x64',
                         'KOTLIN_TARGET[sdk=appletvos*]' => 'tvos_arm64',
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CommonNativeIT.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CommonNativeIT.kt
index f7d50c756a2..00eb012ee2c 100644
--- a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CommonNativeIT.kt
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/CommonNativeIT.kt
@@ -66,8 +66,8 @@ class CommonNativeIT : BaseGradleIT() {
     fun testCommonWatchos() {
         doCommonNativeTest(
             "common-watchos",
-            libTargets = listOf("watchosLibArm32", "watchosLibArm64", "watchosLibX86"),
-            appTargets = listOf("watchosArm32", "watchosArm64", "watchosX86")
+            libTargets = listOf("watchosLibArm32", "watchosLibArm64", "watchosLibX64"),
+            appTargets = listOf("watchosArm32", "watchosArm64", "watchosX64")
         )
     }
 
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/FatFrameworkIT.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/FatFrameworkIT.kt
index d53e2d903a5..7693d52c788 100644
--- a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/FatFrameworkIT.kt
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/FatFrameworkIT.kt
@@ -51,12 +51,12 @@ class FatFrameworkIT : BaseGradleIT() {
             gradleBuildScript().modify {
                 it.checkedReplace("iosArm32()", "watchosArm32()")
                     .checkedReplace("iosArm64()", "watchosArm64()")
-                    .checkedReplace("iosX64()", "watchosX86()")
+                    .checkedReplace("iosX64()", "watchosX64()")
             }
 
             build("fat") {
                 checkSmokeBuild(
-                    archs = listOf("x86", "arm64", "arm32"),
+                    archs = listOf("x64", "arm64", "arm32"),
                     targetPrefix = "watchos",
                     expectedPlistPlatform = "WatchOS"
                 )
@@ -64,7 +64,7 @@ class FatFrameworkIT : BaseGradleIT() {
                 val binary = fileInWorkingDir("build/fat-framework/smoke.framework/smoke")
                 with(runProcess(listOf("file", binary.absolutePath), projectDir)) {
                     assertTrue(isSuccessful)
-                    assertTrue(output.contains("\\(for architecture i386\\):\\s+Mach-O dynamically linked shared library i386".toRegex()))
+                    assertTrue(output.contains("\\(for architecture x86_64\\):\\s+Mach-O 64-bit dynamically linked shared library x86_64".toRegex()))
                     assertTrue(output.contains("\\(for architecture armv7k\\):\\s+Mach-O dynamically linked shared library arm_v7k".toRegex()))
                     assertTrue(output.contains("\\(for architecture arm64_32\\):\\s+Mach-O dynamically linked shared library arm64_32_v8".toRegex()))
                 }
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-apple-devices-common/common-watchos/app/src/watchosX86Main/kotlin/simulator.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-apple-devices-common/common-watchos/app/src/watchosX64Main/kotlin/simulator.kt
similarity index 100%
rename from libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-apple-devices-common/common-watchos/app/src/watchosX86Main/kotlin/simulator.kt
rename to libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-apple-devices-common/common-watchos/app/src/watchosX64Main/kotlin/simulator.kt
diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-apple-devices-common/common-watchos/lib/src/watchosLibX86Main/kotlin/simulator.kt b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-apple-devices-common/common-watchos/lib/src/watchosLibX64Main/kotlin/simulator.kt
similarity index 100%
rename from libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-apple-devices-common/common-watchos/lib/src/watchosLibX86Main/kotlin/simulator.kt
rename to libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/native-apple-devices-common/common-watchos/lib/src/watchosLibX64Main/kotlin/simulator.kt