diff --git a/charting/saml2.pl b/charting/saml2.pl
index a0ccde17..bc69fd04 100755
--- a/charting/saml2.pl
+++ b/charting/saml2.pl
@@ -27,11 +27,21 @@
 	open(TXT, xalanCall . " -IN $fn -XSL saml2.xsl|") || die "could not open input file";
 	$_ = <TXT>;
 	chop;
+	# print "$month: $_\n";
 	my ($entities, $idps, $sps, $saml2total, $saml2idp, $saml2sp) = split;
-	push @overallRatio, $saml2total/$entities;
-	push @idpRatio, $saml2idp/$idps;
-	push @spRatio, $saml2sp/$sps;
-	push @product, ($saml2idp/$idps)*($saml2sp/$sps);
+	if ($entities == 0) {
+		# print "skipping $month: $_\n";
+		next;
+	}
+	my $mPrefix = $allMonths ? "$month: " : '';
+	my $oRatio = $saml2total/$entities;
+	push @overallRatio, "$mPrefix$oRatio";
+	my $iRatio = $saml2idp/$idps;
+	push @idpRatio, "$mPrefix$iRatio";
+	my $sRatio = $saml2sp/$sps;
+	push @spRatio, "$mPrefix$sRatio";
+	my $p = ($saml2idp/$idps)*($saml2sp/$sps);
+	push @product, "$mPrefix$p";
 	close TXT;
 }
 
@@ -55,4 +65,4 @@
 	print "$ratio\n";
 }
 
-1;
\ No newline at end of file
+1;