diff --git a/src/de/p1st/monitor/logger.py b/src/de/p1st/monitor/logger.py
index e892d23..9bedf5f 100644
--- a/src/de/p1st/monitor/logger.py
+++ b/src/de/p1st/monitor/logger.py
@@ -24,9 +24,12 @@ class Logger(ABC):
 
         # Either both variables are given, or both are None
         if warn_if_above is not None and critical_if_above is not None:
-            assert critical_if_above > warn_if_above
+            if critical_if_above <= warn_if_above:
+                raise Exception(f'The critical limit is not greater that the warning limit:'
+                                f' {critical_if_above}, {warn_if_above}')
         else:
-            assert warn_if_above is None and critical_if_above is None
+            if warn_if_above is not None or critical_if_above is not None:
+                raise Exception('Either both, warn_if_above and critical_if_above, must be given, or both must be None.')
         self.warn_if_above = warn_if_above
         self.critical_if_above = critical_if_above