diff --git a/direct/src/plugin_activex/Sources.pp b/direct/src/plugin_activex/Sources.pp
index 680c575014..e2379d3b06 100755
--- a/direct/src/plugin_activex/Sources.pp
+++ b/direct/src/plugin_activex/Sources.pp
@@ -4,7 +4,7 @@
 // developing the plugin system itself.  Define HAVE_P3D_PLUGIN in
 // your Config.pp to build this directory.
 
-#define BUILD_DIRECTORY $[and $[HAVE_P3D_PLUGIN],$[WINDOWS_PLATFORM],$[HAVE_ACTIVEX]]
+#define BUILD_DIRECTORY $[and $[HAVE_P3D_PLUGIN],$[WINDOWS_PLATFORM],$[HAVE_ACTIVEX],$[not $[eq $[USE_COMPILER],MSVC9x64]]]
 
 #define _MT $[if $[P3D_PLUGIN_MT],_mt]