diff --git a/AppleWin/source/Debugger/Debugger_DisassemblerData.cpp b/AppleWin/source/Debugger/Debugger_DisassemblerData.cpp
index 19b26473..63c6c1fd 100644
--- a/AppleWin/source/Debugger/Debugger_DisassemblerData.cpp
+++ b/AppleWin/source/Debugger/Debugger_DisassemblerData.cpp
@@ -151,7 +151,7 @@ Update_t CmdDisasmDataList (int nArgs)
 				, pData->nStartAddress
 				, CHC_ARG_SEP
 				, CHC_ADDRESS
-				, pData->nEndAddress
+				, pData->nEndAddress - 1
 			);
 			ConsolePrint( sText );
 		}