--- a/extra/pd~/pd~.c
+++ b/extra/pd~/pd~.c
@@ -59,6 +59,9 @@
 #ifdef __APPLE__
 static char pd_tilde_dllextent[] = ".d_fat",
     pd_tilde_dllextent2[] = ".pd_darwin";
+#endif
+#if defined(_WIN32) || defined(__CYGWIN__)
+static char pd_tilde_dllextent[] = ".m_i386", pd_tilde_dllextent2[] = ".dll";
 #endif
 
 /* ------------------------ pd_tilde~ ----------------------------- */