diff --git a/pysnmp/hlapi/v3arch/lcd.py b/pysnmp/hlapi/v3arch/lcd.py
index 3c11635e..88f90214 100644
--- a/pysnmp/hlapi/v3arch/lcd.py
+++ b/pysnmp/hlapi/v3arch/lcd.py
@@ -175,7 +175,7 @@ class CommandGeneratorLcdConfigurator(AbstractLcdConfigurator):
                     cache['addr'][addrKey] = addrName, useCount
                 else:
                     config.delTargetAddr(snmpEngine, addrName)
-
+                    del cache['addr'][addrKey]
                     addrNames.add(addrKey)
 
                     if addrKey[1] in cache['tran']: