diff --git a/tests/test_security_curve.cpp b/tests/test_security_curve.cpp
index 42f6923a..fc025a8c 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 (_WIN32_WINNT < 0x0600)
+#if (ZMQ_HAVE_WINDOWS and _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);