diff --git a/src/msw/gsocket.c b/src/msw/gsocket.c
index 00e5d32ace..59214ea7d6 100644
--- a/src/msw/gsocket.c
+++ b/src/msw/gsocket.c
@@ -42,6 +42,11 @@
 #define SOCKLEN_T  int
 #endif
 
+#if defined(__BORLANDC__)
+GAddress *GAddress_new(void);
+GSocket *GSocket_new(void);
+#endif
+
 #ifdef _MSC_VER
     /* using FD_SET results in this warning */
     #pragma warning(disable:4127) /* conditional expression is constant */