diff --git a/tests/libtransport/HTTPRequest.cpp b/tests/libtransport/HTTPRequest.cpp
index fd29998a8c5cc50751aebcc3d2e97c6bf38e651c..0954d92b2873e84d32a2dae85204c3bfd786582e 100644
--- a/tests/libtransport/HTTPRequest.cpp
+++ b/tests/libtransport/HTTPRequest.cpp
@@ -20,6 +20,10 @@ using namespace Transport;
 #define get_value_or(X) substr()
 #endif
 
+#ifdef _MSC_VER
+#define sleep Sleep
+#endif
+
 class HTTPRequestTest : public CPPUNIT_NS :: TestFixture, public BasicTest {
 	CPPUNIT_TEST_SUITE(HTTPRequestTest);
 	CPPUNIT_TEST(GETThreadPool);