diff --git a/ofdm/ofdm_rx.m b/ofdm/ofdm_rx.m
index 58b8cc0..0206746 100644
--- a/ofdm/ofdm_rx.m
+++ b/ofdm/ofdm_rx.m
@@ -263,7 +263,7 @@ for k=start:length(Z_)
 end
 
 figure;
-plot(real(sym_H'), imag(sym_H'), '+'); grid; title('Sym_{H}'); axis([-2 2 -2 2]);
+plot(real(sym_H'), imag(sym_H'), '+'); grid; title('Sym_{H}'); axis([-1.5 1.5 -1.5 1.5]);
 
 function Y = spec_order(N, X)
     Y = [X(N/2+1:N)' X(1:N/2)']';