diff --git a/src/core/net.c b/src/core/net.c
index 1e092a7a..0ab84500 100644
--- a/src/core/net.c
+++ b/src/core/net.c
@@ -69,7 +69,7 @@ typedef struct {
 } JanetStream;
 #define JSOCKCLOSE(x) closesocket(x)
 #define JSOCKDEFAULT INVALID_SOCKET
-#define JLASTERR WSALastError()
+#define JLASTERR WSAGetLastError()
 #define JSOCKVALID(x) ((x) != INVALID_SOCKET)
 #define JEINTR WSAEINTR
 #define JEWOULDBLOCK WSAEWOULDBLOCK