diff --git a/matlab/Tutorials/Conical_Horn_Antenna.m b/matlab/Tutorials/Conical_Horn_Antenna.m
index f1955e8..97123a1 100644
--- a/matlab/Tutorials/Conical_Horn_Antenna.m
+++ b/matlab/Tutorials/Conical_Horn_Antenna.m
@@ -78,7 +78,7 @@ p(1,end+1) = horn.radius;  % x-coord point 1
 p(2,end) = 0;     % z-coord point 1
 p(1,end+1) = horn.radius;   % x-coord point 1
 p(2,end) = -horn.feed_length;     % z-coord point 1
-CSX = AddRotPoly(CSX,'Conical_Horn',10,0,2,p);
+CSX = AddRotPoly(CSX,'Conical_Horn',10,'x',p,'z');
 
 % horn aperture
 A = pi*((horn.radius + sin(horn.angle)*horn.length)*unit)^2;
diff --git a/matlab/Tutorials/Helical_Antenna.m b/matlab/Tutorials/Helical_Antenna.m
index 48b24f2..cccd997 100644
--- a/matlab/Tutorials/Helical_Antenna.m
+++ b/matlab/Tutorials/Helical_Antenna.m
@@ -134,7 +134,7 @@ port = calcPort(port, Sim_Path, freq);
 
 Zin = port.uf.tot ./ port.if.tot;
 s11 = port.uf.ref ./ port.uf.inc;
-P_in = 0.5 * port.uf.inc .* conj( port.if.inc ); % antenna feed power
+P_in = 0.5*real(port.uf.tot).*conj(port.if.tot); % accepted antenna feed power
 
 % plot feed point impedance
 figure