diff --git a/modules/data/statistics.lua b/modules/data/statistics.lua
index 248d02a2..fd6e633c 100644
--- a/modules/data/statistics.lua
+++ b/modules/data/statistics.lua
@@ -62,7 +62,8 @@ local function format_clock(value)
         hours=true,
         minutes=true,
         seconds=false,
-        time=true
+        time=false,
+        string=true
     })
 end
 
diff --git a/modules/gui/playerdata.lua b/modules/gui/playerdata.lua
index 47892552..75ddba46 100644
--- a/modules/gui/playerdata.lua
+++ b/modules/gui/playerdata.lua
@@ -21,7 +21,8 @@ local function format_clock(value)
         hours=true,
         minutes=true,
         seconds=false,
-        time=true
+        time=false,
+        string=true
     })
 end
 
@@ -44,7 +45,7 @@ local computed_stats = {
         end
     },
     SessionTime = {
-        default = '00:00',
+        default = format_clock(0),
         calculate = function(player_name)
             return format_clock((playerStats['Playtime']:get(player_name, 0) - playerStats['AfkTime']:get(player_name, 0)) / playerStats['JoinCount']:get(player_name, 1))
         end
@@ -68,7 +69,7 @@ local computed_stats = {
         end
     },
     NetPlayTime = {
-        default = '00:00',
+        default = format_clock(0),
         calculate = function(player_name)
             return format_clock((playerStats['Playtime']:get(player_name, 0) - playerStats['AfkTime']:get(player_name, 0)))
         end