diff --git a/custom_components/ble_monitor/ble_parser/hormann.py b/custom_components/ble_monitor/ble_parser/hormann.py
index e95750795..e85471149 100644
--- a/custom_components/ble_monitor/ble_parser/hormann.py
+++ b/custom_components/ble_monitor/ble_parser/hormann.py
@@ -18,7 +18,7 @@ def parse_hormann(self, data, source_mac, rssi):
 
     while data_size > 1:
         packet_size = data[packet_start] + 1
-        if packet_size > 1 and packet_size <= packet_size:
+        if packet_size > 1 and packet_size <= data_size:
             packet = data[packet_start:packet_start + packet_size]
             packet_type = packet[1]
 
diff --git a/custom_components/ble_monitor/ble_parser/teltonika.py b/custom_components/ble_monitor/ble_parser/teltonika.py
index 3f290cdea..b4c33214c 100644
--- a/custom_components/ble_monitor/ble_parser/teltonika.py
+++ b/custom_components/ble_monitor/ble_parser/teltonika.py
@@ -33,7 +33,7 @@ def parse_teltonika(self, data, complete_local_name, source_mac, rssi):
     data_size = len(data)
     while data_size > 1:
         packet_size = data[packet_start] + 1
-        if packet_size > 1 and packet_size <= packet_size:
+        if packet_size > 1 and packet_size <= data_size:
             packet = data[packet_start:packet_start + packet_size]
             packet_type = packet[1]
             if packet_type == 0x16 and packet_size > 4: