diff --git a/Makefile.win b/Makefile.win
index 4deb7bb2f9..fb10946d18 100644
--- a/Makefile.win
+++ b/Makefile.win
@@ -10,6 +10,7 @@ HAVE_DYLIB = 1
 HAVE_D3D9 = 1
 HAVE_NETPLAY = 1
 HAVE_STDIN_CMD = 1
+HAVE_COMMAND = 1
 HAVE_THREADS = 1
 HAVE_RGUI = 1
 HAVE_GLUI = 1