diff --git a/tools/sigma/backends/tools.py b/tools/sigma/backends/tools.py
index d11995a598d..8c182ecc0ab 100644
--- a/tools/sigma/backends/tools.py
+++ b/tools/sigma/backends/tools.py
@@ -53,8 +53,6 @@ def generateListNode(self, node):
 
     def generateMapItemNode(self, node):
         key, value = node
-        if type(value) not in (str, int, list, type(None)):
-            raise TypeError("Map values must be strings, numbers or lists, not " + str(type(value)))
         return [key]
 
     def generateValueNode(self, node):