diff --git a/tests/test_security_curve.cpp b/tests/test_security_curve.cpp
index ebfb9538..7d317b8b 100644
--- a/tests/test_security_curve.cpp
+++ b/tests/test_security_curve.cpp
@@ -245,7 +245,7 @@ int main (void)
 
     ip4addr.sin_family = AF_INET;
     ip4addr.sin_port = htons (9998);
-#if (ZMQ_HAVE_WINDOWS and _WIN32_WINNT < 0x0600)
+#if defined(ZMQ_HAVE_WINDOWS) && _WIN32_WINNT < 0x0600
     ip4addr.sin_addr.s_addr = inet_addr ("127.0.0.1");
 #else
      inet_pton(AF_INET, "127.0.0.1", &ip4addr.sin_addr);
diff --git a/tests/test_security_null.cpp b/tests/test_security_null.cpp
index f0ce6b55..c4ae5c5f 100644
--- a/tests/test_security_null.cpp
+++ b/tests/test_security_null.cpp
@@ -158,7 +158,7 @@ int main (void)
 
     ip4addr.sin_family = AF_INET;
     ip4addr.sin_port = htons(9003);
-#if (ZMQ_HAVE_WINDOWS and _WIN32_WINNT < 0x0600)
+#if defined(ZMQ_HAVE_WINDOWS) && _WIN32_WINNT < 0x0600
     ip4addr.sin_addr.s_addr = inet_addr ("127.0.0.1");
 #else
      inet_pton(AF_INET, "127.0.0.1", &ip4addr.sin_addr);
diff --git a/tests/test_security_plain.cpp b/tests/test_security_plain.cpp
index bfa0b7ed..8d166410 100644
--- a/tests/test_security_plain.cpp
+++ b/tests/test_security_plain.cpp
@@ -164,7 +164,7 @@ int main (void)
 
     ip4addr.sin_family = AF_INET;
     ip4addr.sin_port = htons (9998);
-#if (ZMQ_HAVE_WINDOWS and _WIN32_WINNT < 0x0600)
+#if defined(ZMQ_HAVE_WINDOWS) && _WIN32_WINNT < 0x0600
     ip4addr.sin_addr.s_addr = inet_addr ("127.0.0.1");
 #else
      inet_pton(AF_INET, "127.0.0.1", &ip4addr.sin_addr);