diff --git a/classes/__init__.py b/classes/__init__.py
index 2124ff0..6485373 100644
--- a/classes/__init__.py
+++ b/classes/__init__.py
@@ -117,7 +117,7 @@ class Service:
  def json(self, indent = 0, iid = False, name = True, depst = True, deptime = True, arrst = True, arrtime = True, deppf = True, currdep = True, arrpf = True, curarr = True, duration = True, dest = True, stationkwargs = {}):
   out = " " * indent + "{\n"
 
-  out += (" " * indent + " \"@id\": %i,\n" % iid) if iid else ""
+  out += (" " * indent + " \"@id\": %i,\n" % iid) if iid is not False else ""
   out += (" " * indent + " \"name\": \"%s\",\n" % self.name) if name else ""
   out += (" " * indent + " \"destination\": \"%s\",\n" % self.dest.name) if dest and self.dest else ""
   
@@ -268,7 +268,7 @@ class Connection:
  def json(self, indent = 0, cid = False, frm = True, to = True, deptime = True, arrtime = True, duration = True, changes = True, services = True, servicekwargs = {}, stationkwargs = {}):
   out = " " * indent + "{\n"
 
-  out += (" " * indent + " \"@id\": %i,\n" % cid) if cid else "" 
+  out += (" " * indent + " \"@id\": %i,\n" % cid) if cid is not False else "" 
 
   if frm:
    out += " " * indent + " \"from\":\n"