diff --git a/kotlin/wallet-core-kotlin/build.gradle.kts b/kotlin/wallet-core-kotlin/build.gradle.kts
index 29e96a3ceb2..8fc8be0a32f 100644
--- a/kotlin/wallet-core-kotlin/build.gradle.kts
+++ b/kotlin/wallet-core-kotlin/build.gradle.kts
@@ -104,6 +104,10 @@ kotlin {
             }
         }
     }
+
+    compilerOptions {
+        freeCompilerArgs.add("-Xexpect-actual-classes")
+    }
 }
 
 android {