diff --git a/Contrib/MultiUser/MultiUser.nsh b/Contrib/MultiUser/MultiUser.nsh
index c2792e69..833ac781 100644
--- a/Contrib/MultiUser/MultiUser.nsh
+++ b/Contrib/MultiUser/MultiUser.nsh
@@ -68,6 +68,9 @@ Var MultiUser.InstallMode
   !define MULTIUSER_EXECUTIONLEVEL_ALLUSERS
 !else
   RequestExecutionLevel user
+  !ifndef MULTIUSER_EXECUTIONLEVEL
+    !warning "MULTIUSER_EXECUTIONLEVEL not set!"
+  !endif
 !endif
 
 /*
@@ -192,27 +195,35 @@ Installer/uninstaller initialization
 
 !macroend
 
-!macro MULTIUSER_INIT_TEXTS
+!macro MULTIUSER_INIT_TEXTS UNINSTALLER_PREFIX
+
+  !if "${UNINSTALLER_PREFIX}" == ""
+    !define /ReDef MULTIUSER_TMPSTR_CAPTION "$(^SetupCaption)"
+  !else
+    !define /ReDef MULTIUSER_TMPSTR_CAPTION "$(^Name)"
+  !endif
 
   !ifndef MULTIUSER_INIT_TEXT_ADMINREQUIRED
-    !define MULTIUSER_INIT_TEXT_ADMINREQUIRED "$(^Caption) requires administrator privileges."
+    !define MULTIUSER_INIT_TEXT_ADMINREQUIRED "${MULTIUSER_TMPSTR_CAPTION} requires administrator privileges."
   !endif
 
   !ifndef MULTIUSER_INIT_TEXT_POWERREQUIRED
-    !define MULTIUSER_INIT_TEXT_POWERREQUIRED "$(^Caption) requires at least Power User privileges."
+    !define MULTIUSER_INIT_TEXT_POWERREQUIRED "${MULTIUSER_TMPSTR_CAPTION} requires at least Power User privileges."
   !endif
 
   !ifndef MULTIUSER_INIT_TEXT_ALLUSERSNOTPOSSIBLE
     !define MULTIUSER_INIT_TEXT_ALLUSERSNOTPOSSIBLE "Your user account does not have sufficient privileges to install $(^Name) for all users of this computer."
   !endif
 
+  !undef MULTIUSER_TMPSTR_CAPTION
+
 !macroend
 
 !macro MULTIUSER_INIT_CHECKS UNINSTALLER_PREFIX UNINSTALLER_FUNCPREFIX
 
   ;Installer initialization - check privileges and set install mode
 
-  !insertmacro MULTIUSER_INIT_TEXTS
+  !insertmacro MULTIUSER_INIT_TEXTS "${UNINSTALLER_PREFIX}"
 
   UserInfo::GetAccountType
   Pop $MultiUser.Privileges
@@ -312,13 +323,14 @@ Installer/uninstaller initialization
       ${endif}
   
     !endif
-    
+
+  !if ${NSIS_PTR_SIZE} <= 4
   ${else}
   
     ;Not running Windows NT, per-user installation not supported
-    
     Call ${UNINSTALLER_FUNCPREFIX}MultiUser.InstallMode.AllUsers
-  
+
+  !endif
   ${endif}
 
 !macroend
diff --git a/Docs/src/history.but b/Docs/src/history.but
index a6d6b4b0..bb9b41d9 100644
--- a/Docs/src/history.but
+++ b/Docs/src/history.but
@@ -26,6 +26,8 @@ Released on ??? ??th, 20??
 
 \b Fixed !macroundef of last defined macro bug
 
+\b Fixed MultiUser caption string bug (\W{http://sf.net/p/nsis/bugs/1012}{bug #1012})
+
 \b !undef issues warnings instead of errors
 
 \b MakeNSIS prints -CMDHELP to stdout (\W{http://sf.net/p/nsis/bugs/1203}{bug #1203})