diff --git a/tools/sigma/backends/carbonblack.py b/tools/sigma/backends/carbonblack.py
index e85d23469..5373d0e2b 100644
--- a/tools/sigma/backends/carbonblack.py
+++ b/tools/sigma/backends/carbonblack.py
@@ -167,6 +167,7 @@ class CarbonBlackQueryBackend(CarbonBlackWildcardHandlingMixin, SingleTextQueryB
     def generateMapItemNode(self, node):
         fieldname, value = node
         if fieldname == "EventID" and (type(value) is str or type(value) is int):
+            value = str(value)
             fieldname = self.generateEventKey(value)
             value = self.generateEventValue(value)
         if fieldname.lower() in self.excluded_fields: