diff --git a/serie1/IT19ta_ZH7_S1_Aufg1.py b/serie1/IT19ta_ZH7_S1_Aufg1.py
old mode 100644
new mode 100755
diff --git a/serie1/IT19ta_ZH7_S1_Aufg2.py b/serie1/IT19ta_ZH7_S1_Aufg2.py
old mode 100644
new mode 100755
diff --git a/serie1/IT19ta_ZH7_S1_Aufg3.py b/serie1/IT19ta_ZH7_S1_Aufg3.py
old mode 100644
new mode 100755