diff --git a/usrp/sps/row b/usrp/sps/row
index bd07876..07920e4 100755
--- a/usrp/sps/row
+++ b/usrp/sps/row
@@ -24,7 +24,7 @@ for prefix in "$@"; do
 	fi
 	last=$prefix
 
-	echo "<TR$color><TH>$prefix<TD align=\"center\">Offset"
+	echo "<TR$color><TH>$prefix<TD>"
 	f=2405
 	while [ $f -le 2480 ]; do
 		echo "<TD align=\"center\">$f MHz"
diff --git a/usrp/sps/vizp b/usrp/sps/vizp
index 67a7b8f..92894c5 100755
--- a/usrp/sps/vizp
+++ b/usrp/sps/vizp
@@ -45,6 +45,7 @@ set yrange [-20:20]
 set xlabel "Frequency of test wave (MHz)"
 set ylabel "Peak power (dB)"
 
+set xzeroaxis lt -1
 set mytics 2
 set grid