diff --git a/share/setup.nsi b/share/setup.nsi
index bffef9c413..3d528ce789 100644
--- a/share/setup.nsi
+++ b/share/setup.nsi
@@ -75,6 +75,10 @@ Section -Main SEC0000
     File /r /x *.exe /x *.o ../src\*.*
     SetOutPath $INSTDIR
     WriteRegStr HKCU "${REGKEY}\Components" Main 1
+
+    # Remove old wxwidgets-based-bitcoin executable and locales:
+    Delete /REBOOTOK $INSTDIR\bitcoin.exe
+    RMDir /r /REBOOTOK $INSTDIR\locale
 SectionEnd
 
 Section -post SEC0001