diff --git a/Services/CalendarService.qml b/Services/CalendarService.qml
index a63eafd4..8a519c95 100644
--- a/Services/CalendarService.qml
+++ b/Services/CalendarService.qml
@@ -127,7 +127,7 @@ Singleton {
   Process {
     id: availabilityCheckProcess
     running: false
-    command: ["python3", root.checkCalendarAvailableScript]
+    command: ["sh", "-c", "command -v python3 >/dev/null 2>&1 && python3 " + root.checkCalendarAvailableScript + " || echo 'python3 unavailable'"]
 
     stdout: StdioCollector {
       onStreamFinished: {