diff --git a/polymer/eduke32/build/include/m32script.h b/polymer/eduke32/build/include/m32script.h
index 046e69f82..8fca9c59e 100644
--- a/polymer/eduke32/build/include/m32script.h
+++ b/polymer/eduke32/build/include/m32script.h
@@ -33,10 +33,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #define MAXQUOTES 2048
 #define MAXQUOTELEN 128
 
-// Some misc #defines
-//#define NO       0
-//#define YES      1
-
 typedef int32_t instype;
 typedef int32_t ofstype;
 
diff --git a/polymer/eduke32/source/duke3d.h b/polymer/eduke32/source/duke3d.h
index 537b95b8c..0ecee8bbd 100644
--- a/polymer/eduke32/source/duke3d.h
+++ b/polymer/eduke32/source/duke3d.h
@@ -91,9 +91,6 @@ extern "C" {
 #define TICSPERFRAME        4
 #define TICRATE             120
 
-#define NO                  0
-#define YES                 1
-
 #define PACKBUF_SIZE        2048
 
 #define TILE_SAVESHOT       (MAXTILES-1)