diff --git a/autoload/latex/util.vim b/autoload/latex/util.vim
index 8079a14..50f4c4d 100644
--- a/autoload/latex/util.vim
+++ b/autoload/latex/util.vim
@@ -124,14 +124,15 @@ function! latex#util#execute(exe) " {{{1
 
   " Set up command string based on the given system
   if has('win32')
-    if bg
-      let cmd = '!start /b ' . a:exe.cmd
-    else
-      let cmd = '!' . a:exe.cmd
-    endif
+    let cmd = a:exe.cmd
     if null
       let cmd .= ' >nul'
     endif
+    if bg
+      let cmd = '!start /b "' . cmd . '"'
+    else
+      let cmd = '!' . cmd
+    endif
   else
     let cmd = '!' . a:exe.cmd
     if null