diff --git a/kotlin-native/backend.native/tests/build.gradle b/kotlin-native/backend.native/tests/build.gradle
index 2d96cd39bee..626a66b0fba 100644
--- a/kotlin-native/backend.native/tests/build.gradle
+++ b/kotlin-native/backend.native/tests/build.gradle
@@ -6006,6 +6006,10 @@ fileCheckTest("filecheck_escape_analysis_enabled") {
 }
 
 fileCheckTest("filecheck_enum_when") {
+    // In case of `-opt` we inline Enum.ordinal due to property inlining.
+    if (project.globalTestArgs.contains('-opt')) {
+        checkPrefix = "CHECK-OPT"
+    }
     annotatedSource = project.file('filecheck/enum_when.kt')
 }
 
diff --git a/kotlin-native/backend.native/tests/filecheck/enum_when.kt b/kotlin-native/backend.native/tests/filecheck/enum_when.kt
index ea59eaecb34..d7a7259284c 100644
--- a/kotlin-native/backend.native/tests/filecheck/enum_when.kt
+++ b/kotlin-native/backend.native/tests/filecheck/enum_when.kt
@@ -13,13 +13,18 @@ enum class COLOR {
 fun main() {
     for (i in COLOR.values()) {
         // CHECK: = call i32 @"kfun:kotlin.Enum#<get-ordinal>(){}kotlin.Int"(
+        // We inline .ordinal property access in case of opt build, so check direct field load instead.
+        // CHECK-OPT: getelementptr inbounds %"kclassbody:kotlin.Enum#internal", %"kclassbody:kotlin.Enum#internal"* %{{[0-9a-z]*}}, i32 0, i32 2
         print(when (i) {
             // we can't check the register is same, because it can be saved on stack and loaded back
             // CHECK: icmp eq i32 %{{[0-9a-z]*}}, 0
+            // CHECK-OPT: icmp eq i32 %{{[0-9a-z]*}}, 0
             COLOR.RED -> 0xff0000
             // CHECK: icmp eq i32 %{{[0-9a-z]*}}, 1
+            // CHECK-OPT: icmp eq i32 %{{[0-9a-z]*}}, 1
             COLOR.GREEN -> 0x00ff00
             // CHECK: icmp eq i32 %{{[0-9a-z]*}}, 2
+            // CHECK-OPT: icmp eq i32 %{{[0-9a-z]*}}, 2
             COLOR.BLUE -> 0x0000ff
         })
     }