diff --git a/install/install.py b/install/install.py
index 15c722d44..4d0ee9985 100755
--- a/install/install.py
+++ b/install/install.py
@@ -1284,7 +1284,7 @@ $cfg['Servers'][$i]['LogoutURL'] = 'phpmyadminsignin.php?logout';
 imap_folder_list_limit = 0
 """
 
-            writeToFile = open(labsPath, 'w')
+            writeToFile = open(labsPath, 'a')
             writeToFile.write(labsData)
             writeToFile.close()
 
diff --git a/plogical/upgrade.py b/plogical/upgrade.py
index 65d5584e3..1d595ae4f 100755
--- a/plogical/upgrade.py
+++ b/plogical/upgrade.py
@@ -496,7 +496,7 @@ $cfg['Servers'][$i]['LogoutURL'] = 'phpmyadminsignin.php?logout';
 imap_folder_list_limit = 0
 """
 
-            writeToFile = open(labsPath, 'w')
+            writeToFile = open(labsPath, 'a')
             writeToFile.write(labsData)
             writeToFile.close()