diff --git a/save-html.c b/save-html.c
index 336eff0be..c3d5073b2 100644
--- a/save-html.c
+++ b/save-html.c
@@ -101,7 +101,7 @@ static void put_cylinder_HTML(struct membuffer *b, struct dive *dive)
 		if (cylinder->gasmix.o2.permille) {
 			put_format(b, "\"O2\":\"%u.%u%%\",", FRACTION(cylinder->gasmix.o2.permille, 10));
 		} else {
-			write_attribute(b, "O2", "--");
+			write_attribute(b, "O2", "Air");
 		}
 		put_string(b, "},");
 	}
@@ -408,6 +408,7 @@ void export_translation(const char *file_name)
 	write_attribute(b, "Work_Pressure", translate("gettextFromC", "Work Pressure"));
 	write_attribute(b, "Start_Pressure", translate("gettextFromC", "Start Pressure"));
 	write_attribute(b, "End_Pressure", translate("gettextFromC", "End Pressure"));
+	write_attribute(b, "Gas", translate("gettextFromC", "Gas"));
 	write_attribute(b, "Weight", translate("gettextFromC", "Weight"));
 	write_attribute(b, "Type", translate("gettextFromC", "Type"));
 	write_attribute(b, "Events", translate("gettextFromC", "Events"));
diff --git a/theme/list_lib.js b/theme/list_lib.js
index 0a7921823..5d8538b1f 100644
--- a/theme/list_lib.js
+++ b/theme/list_lib.js
@@ -863,7 +863,7 @@ function get_cylinders_HTML(dive)
 		return "";
 
 	var result = "";
-	result += '<h2 class="det_hed">' + translate.Dive_equipments + '</h2><table><tr><td class="words">' + translate.Type + '</td><td class="words">' + translate.Size + '</td><td class="words">' + translate.Work_Pressure + '</td><td class="words">' + translate.Start_Pressure + '</td><td class="words">' + translate.End_Pressure + '</td><td class="words">O2</td></tr>';
+	result += '<h2 class="det_hed">' + translate.Dive_equipments + '</h2><table><tr><td class="words">' + translate.Type + '</td><td class="words">' + translate.Size + '</td><td class="words">' + translate.Work_Pressure + '</td><td class="words">' + translate.Start_Pressure + '</td><td class="words">' + translate.End_Pressure + '</td><td class="words">'+translate.Gas+'</td></tr>';
 	for (var i in dive.Cylinders) {
 		result += get_cylinder_HTML(dive.Cylinders[i]);
 	}