diff --git a/src/gui/DamarisGUI.py b/src/gui/DamarisGUI.py
index 41bf0d2..d10e0e4 100644
--- a/src/gui/DamarisGUI.py
+++ b/src/gui/DamarisGUI.py
@@ -556,17 +556,17 @@ class DamarisGUI:
         if experimentstarttime > 0 and expectedexperimentruntime > 0:
             runtimemin, runtimesec = divmod(math.floor(experimentruntime), 60)
             runtimehours, runtimemin = divmod(runtimemin, 60)
-            experimenttimetext += " ({:02d}:{:02d}:{:02d} / ".format(runtimehours, runtimemin, runtimesec)
+            experimenttimetext += " ({:02d}:{:02d}:{:02d} / ".format(int(runtimehours), int(runtimemin), int(runtimesec))
             expectedmin, expectedsec = divmod(math.ceil(expectedexperimentruntime), 60)
             expectedhours, expectedmin = divmod(expectedmin, 60)
-            experimenttimetext += "{:02d}:{:02d}:{:02d})".format(expectedhours, expectedmin, expectedsec)
+            experimenttimetext += "{:02d}:{:02d}:{:02d})".format(int(expectedhours), int(expectedmin), int(expectedsec))
             
         backendtimetext = ""
         
         if experimentsfinishedtime > 0:
             finexperimmin, finexperimsec = divmod(round(experimentsfinishedtime), 60)
             finexperimhours, finexperimmin = divmod(finexperimmin, 60)
-            backendtimetext = " ({:02d}:{:02d}:{:02d})".format(finexperimhours, finexperimmin, finexperimsec)
+            backendtimetext = " ({:02d}:{:02d}:{:02d})".format(int(finexperimhours), int(finexperimmin), int(finexperimsec))
         
         e_text = None
         r_text = None