diff --git a/pm4py/algo/conformance/temporal_profile/algorithm.py b/pm4py/algo/conformance/temporal_profile/algorithm.py
index e4ab4b619..cdda93684 100644
--- a/pm4py/algo/conformance/temporal_profile/algorithm.py
+++ b/pm4py/algo/conformance/temporal_profile/algorithm.py
@@ -89,7 +89,7 @@ def get_diagnostics_dataframe(elog: Union[EventLog, pd.DataFrame], conf_result:
     if parameters is None:
         parameters = {}
 
-    if pandas_utils.check_is_pandas_dataframe(log):
+    if pandas_utils.check_is_pandas_dataframe(elog):
         case_id_key = exec_utils.get_param_value(Parameters.CASE_ID_KEY, parameters, constants.CASE_CONCEPT_NAME)
         cases = pandas_utils.format_unique(elog[case_id_key].unique())
     else: