diff --git a/tests/testapk/src/native/testbinary.cpp b/tests/testapk/src/native/testbinary.cpp
index 8a0019d..b6a7aa2 100644
--- a/tests/testapk/src/native/testbinary.cpp
+++ b/tests/testapk/src/native/testbinary.cpp
@@ -112,7 +112,7 @@
     }
     struct sockaddr_vm server_sa = (struct sockaddr_vm){
             .svm_family = AF_VSOCK,
-            .svm_port = BnTestService::ECHO_REVERSE_PORT,
+            .svm_port = static_cast<uint32_t>(BnTestService::ECHO_REVERSE_PORT),
             .svm_cid = VMADDR_CID_ANY,
     };
     int ret = TEMP_FAILURE_RETRY(bind(server_fd, (struct sockaddr*)&server_sa, sizeof(server_sa)));