diff --git a/pddnsc/filters/files.py b/pddnsc/filters/files.py
index 3330e2c..7c569be 100644
--- a/pddnsc/filters/files.py
+++ b/pddnsc/filters/files.py
@@ -12,11 +12,7 @@ class StateHashFilter(BaseFilterProvider):
         if not isfile(self.config["filepath"]):
             return True
 
-        new_state = {
-            "ipv4": addr_v4 or "",
-            "ipv6": addr_v6 or "",
-        }
-        new_state_str = json.dumps(new_state)
+        new_state_str = (addr_v4 or "") + (addr_v6 or "")
         new_sha = hashlib.sha256(new_state_str.encode(encoding="utf-8"))
         async with aiofiles.open(
             self.config["filepath"], mode="r", encoding="utf-8"
diff --git a/pddnsc/outputs/files.py b/pddnsc/outputs/files.py
index b0ab7c2..80c3bed 100644
--- a/pddnsc/outputs/files.py
+++ b/pddnsc/outputs/files.py
@@ -21,11 +21,7 @@ class StateFile(BaseOutputProvider):
 
 class StateHashFile(BaseOutputProvider):
     async def set_addrs_imp(self, source_provider, addr_v4, addr_v6):
-        state = {
-            "ipv4": addr_v4 or "",
-            "ipv6": addr_v6 or "",
-        }
-        state_str = json.dumps(state)
+        state_str = (addr_v4 or "") + (addr_v6 or "")
         sha = hashlib.sha256(state_str.encode(encoding="utf-8"))
         async with aiofiles.open(
             self.config["filepath"], mode="w", encoding="utf-8"