diff --git a/glide3x/cvg/init/gdebug.c b/glide3x/cvg/init/gdebug.c
index f298259..ca02fd0 100644
--- a/glide3x/cvg/init/gdebug.c
+++ b/glide3x/cvg/init/gdebug.c
@@ -20,6 +20,7 @@
 ** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
 */
 
+#undef FX_DLL_ENABLE /* so that we don't dllexport the symbols */
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
diff --git a/glide3x/h3/minihwc/gdebug.c b/glide3x/h3/minihwc/gdebug.c
index 8087c57..b685196 100644
--- a/glide3x/h3/minihwc/gdebug.c
+++ b/glide3x/h3/minihwc/gdebug.c
@@ -20,6 +20,7 @@
 ** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
 */
 
+#undef FX_DLL_ENABLE /* so that we don't dllexport the symbols */
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
diff --git a/glide3x/h5/minihwc/gdebug.c b/glide3x/h5/minihwc/gdebug.c
index 9b49706..cd81f02 100644
--- a/glide3x/h5/minihwc/gdebug.c
+++ b/glide3x/h5/minihwc/gdebug.c
@@ -21,6 +21,7 @@
 **
 */
 
+#undef FX_DLL_ENABLE /* so that we don't dllexport the symbols */
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
diff --git a/glide3x/sst1/init/initvg/gdebug.c b/glide3x/sst1/init/initvg/gdebug.c
index 4167c87..8607380 100644
--- a/glide3x/sst1/init/initvg/gdebug.c
+++ b/glide3x/sst1/init/initvg/gdebug.c
@@ -18,6 +18,7 @@
 ** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
 */
 
+#undef FX_DLL_ENABLE /* so that we don't dllexport the symbols */
 #include <stdio.h>
 #include <stdlib.h>