diff --git a/dynamic.py b/dynamic.py
index ea1a903e..33f6608b 100644
--- a/dynamic.py
+++ b/dynamic.py
@@ -113,7 +113,7 @@ def search_params(param):
 
 def check_array_additions(array):
     """ Just a mapper function for the internal _check_array_additions """
-    if array._array.type not in ['list', 'tuple']:
+    if array._array.type not in ['list', 'set']:
         # TODO also check for dict updates
         return []
 
diff --git a/test/completion/dynamic.py b/test/completion/dynamic.py
index e8f6d4a0..b33ef307 100644
--- a/test/completion/dynamic.py
+++ b/test/completion/dynamic.py
@@ -196,13 +196,13 @@ arr2.append('')
 arr2[0]
 
 
-st = {}
+st = {1.0}
 st.add(1)
 lst = list(st)
 
 lst.append('')
 
-#? int() str()
+#? float() int() str()
 lst[0]
 
 lst = [1]