diff --git a/Makefile.win b/Makefile.win
index b0fb3ac4b9..a5f80a46fd 100644
--- a/Makefile.win
+++ b/Makefile.win
@@ -10,6 +10,7 @@ HAVE_DINPUT = 1
 HAVE_XAUDIO = 1
 HAVE_DSOUND = 1
 HAVE_SDL = 1
+HAVE_OPENGL = 1
 HAVE_DYLIB = 1
 HAVE_NETPLAY = 1
 DYNAMIC = 1