diff --git a/src/ExpandVolume/ExpandVolume.rc b/src/ExpandVolume/ExpandVolume.rc
index a21242b4..bf285001 100644
--- a/src/ExpandVolume/ExpandVolume.rc
+++ b/src/ExpandVolume/ExpandVolume.rc
@@ -84,7 +84,7 @@ BEGIN
     EDITTEXT        IDC_PASSWORD,69,8,166,14,ES_PASSWORD | ES_AUTOHSCROLL
     COMBOBOX        IDC_PKCS5_PRF_ID,69,26,86,90,CBS_DROPDOWNLIST | WS_TABSTOP
     CONTROL         "TrueCrypt Mode",IDC_TRUECRYPT_MODE,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,159,28,76,10
-    EDITTEXT        IDC_PIM,69,43,42,14,ES_RIGHT | ES_AUTOHSCROLL | ES_NUMBER | NOT WS_VISIBLE
+    EDITTEXT        IDC_PIM,69,43,42,14,ES_RIGHT | ES_PASSWORD | ES_AUTOHSCROLL | ES_NUMBER | NOT WS_VISIBLE
     CONTROL         "Use P&IM",IDC_PIM_ENABLE,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,70,49,97,10
     CONTROL         "Cache passwords and keyfil&es in memory",IDC_CACHE,
                     "Button",BS_AUTOCHECKBOX | WS_TABSTOP,70,62,153,10