--- a/src/wifi/model/wifi-phy.cc	Wed Nov 13 16:06:43 2013 -0500
+++ b/src/wifi/model/wifi-phy.cc	Wed Nov 13 16:49:02 2013 -0500
@@ -260,7 +260,7 @@
             }
       }
     case WIFI_MOD_CLASS_ERP_OFDM:
-      return 16;
+      return 4;
 
     case WIFI_MOD_CLASS_DSSS:
       if (preamble == WIFI_PREAMBLE_SHORT)
@@ -309,7 +309,7 @@
            return 16;
       }
     case WIFI_MOD_CLASS_ERP_OFDM:
-      return 4;
+      return 16;
 
     case WIFI_MOD_CLASS_DSSS:
       if (preamble == WIFI_PREAMBLE_SHORT)