diff --git a/common/lib/share/mccode-r.c b/common/lib/share/mccode-r.c
index 835d20b45..68c357a35 100644
--- a/common/lib/share/mccode-r.c
+++ b/common/lib/share/mccode-r.c
@@ -3101,7 +3101,7 @@ void mcdis_sphere(double x, double y, double z, double r){
 /* POLYHEDRON IMPLEMENTATION*/
 
 void mcdis_polyhedron(char *vertices_faces){
-  printf("MCDISPLAY: mcdispolyhedron %s\n", vertices_faces);
+  printf("MCDISPLAY: polyhedron %s\n", vertices_faces);
 }
 
 /* POLYGON IMPLEMENTATION */
@@ -3219,9 +3219,9 @@ void mcdis_polygon(int count, ...){
 /* END NEW POLYGON IMPLEMENTATION*/
 
 /*
-void mcdis_polygon(double x1, double y1, double z1,
+void polygon(double x1, double y1, double z1,
                 double x2, double y2, double z2){
-  printf("MCDISPLAY: mcdispolygon(2,%g,%g,%g,%g,%g,%g)\n",
+  printf("MCDISPLAY: polygon(2,%g,%g,%g,%g,%g,%g)\n",
          x1,y1,z1,x2,y2,z2);
 }
 */
diff --git a/tools/Python/mccodelib/instrparser.py b/tools/Python/mccodelib/instrparser.py
index 49007b863..91f99058d 100644
--- a/tools/Python/mccodelib/instrparser.py
+++ b/tools/Python/mccodelib/instrparser.py
@@ -46,8 +46,8 @@ def __init__(self, data=None, debug=False):
         'mcdisdisc'        : 'DRAWCALL',
         'mcdisannulus'     : 'DRAWCALL',
         'mcdisnew_circle'  : 'DRAWCALL',
-        'mcdispolygon'     : 'DRAWCALL',
-        'mcdispolyhedron'  : 'DRAWCALL',
+        'polygon'     : 'DRAWCALL',
+        'polyhedron'  : 'DRAWCALL',
 
 
         'MANTID_PIXEL': 'MANTID_PIXEL',