diff --git a/tests/test_local_api_cpp.cpp b/tests/test_local_api_cpp.cpp
index 03e6dd28..525a975a 100644
--- a/tests/test_local_api_cpp.cpp
+++ b/tests/test_local_api_cpp.cpp
@@ -26,6 +26,7 @@ void on_ready(int socks_fd, int, void *) { ready_fd = socks_fd; }
 int free_port()
 {
     int fd = socket(AF_INET, SOCK_STREAM, 0);
+    SS_CHECK(fd >= 0);
     sockaddr_in a{};
     a.sin_family      = AF_INET;
     a.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
@@ -39,6 +40,9 @@ int free_port()
 bool socks_greeting(int port)
 {
     int fd = socket(AF_INET, SOCK_STREAM, 0);
+    if (fd < 0) {
+        return false;
+    }
     sockaddr_in a{};
     a.sin_family      = AF_INET;
     a.sin_port        = htons(static_cast<uint16_t>(port));
diff --git a/tests/test_resolver_cpp.cpp b/tests/test_resolver_cpp.cpp
index 348c45d6..6a16b3f5 100644
--- a/tests/test_resolver_cpp.cpp
+++ b/tests/test_resolver_cpp.cpp
@@ -24,8 +24,8 @@ namespace {
 
 struct Answered {
     unsigned called = 0;
-    bool missing    = false;
     int family      = 0;
+    bool missing    = false;
     bool ok         = false;
 };
 
@@ -138,6 +138,7 @@ void test_answers_and_limits()
         SS_CHECK(loop.init());
         test_loop = &loop;
         int fd    = socket(AF_INET, SOCK_DGRAM, 0);
+        SS_CHECK(fd >= 0);
         sockaddr_in a{};
         a.sin_family      = AF_INET;
         a.sin_addr.s_addr = htonl(INADDR_LOOPBACK);