diff --git a/ebpfcat/ebpfcat.py b/ebpfcat/ebpfcat.py
index a99cac6449ff5b72764bf6e17c90060bd84a9b06..2073ab569b862b447bd74495efd00178377769a6 100644
--- a/ebpfcat/ebpfcat.py
+++ b/ebpfcat/ebpfcat.py
@@ -350,6 +350,8 @@ class FastEtherCat(SimpleEtherCat):
 class SyncGroupBase:
     missed_counter = 0
 
+    current_data = None
+
     def __init__(self, ec, devices, **kwargs):
         super().__init__(**kwargs)
         self.ec = ec
@@ -409,8 +411,6 @@ class SyncGroup(SyncGroupBase):
 class FastSyncGroup(SyncGroupBase, XDP):
     license = "GPL"
 
-    current_data = None
-
     properties = ArrayMap()
 
     def __init__(self, ec, devices, **kwargs):