diff --git a/aprslib/inet.py b/aprslib/inet.py
index 1af430f..0fa8cb0 100644
--- a/aprslib/inet.py
+++ b/aprslib/inet.py
@@ -283,7 +283,7 @@ class IS(object):
 
             self.logger.debug("Server: %s", test)
 
-            (x, x, callsign, status, x) = test.split(' ', 4)
+            _, _, callsign, status, _ = test.split(' ', 4)
 
             if callsign == "":
                 raise LoginError("Server responded with empty callsign???")
diff --git a/aprslib/parsing/common.py b/aprslib/parsing/common.py
index 3a9ebf8..be26a2a 100644
--- a/aprslib/parsing/common.py
+++ b/aprslib/parsing/common.py
@@ -21,7 +21,7 @@ def _validate_callsign(callsign, prefix=""):
     if not match:
         raise ParseError("%sinvalid callsign" % prefix)
 
-    callsign, x, ssid = match[0]
+    callsign, _, ssid = match[0]
 
     if bool(ssid) and int(ssid) > 15:
         raise ParseError("%sssid not in 0-15 range" % prefix)
diff --git a/aprslib/parsing/position.py b/aprslib/parsing/position.py
index e28c58a..439bc6b 100644
--- a/aprslib/parsing/position.py
+++ b/aprslib/parsing/position.py
@@ -16,7 +16,7 @@ def _parse_position(packet_type, body):
     parsed = {}
 
     if packet_type not in '!=/@;':
-        prefix, body = body.split('!', 1)
+        _, body = body.split('!', 1)
         packet_type = '!'
 
     if packet_type == ';':