diff --git a/autoload/vimlparser.vim b/autoload/vimlparser.vim
index c7cc2d6..1aaa9e0 100644
--- a/autoload/vimlparser.vim
+++ b/autoload/vimlparser.vim
@@ -739,7 +739,7 @@ function! s:VimLParser.parse_command()
     let self.ea.forceit = 0
   endif
 
-  if self.ea.cmd.flags !~# '\<BANG\>' && self.ea.forceit
+  if self.ea.cmd.flags !~# '\<BANG\>' && self.ea.forceit && self.ea.cmd.flags !~# 'USERCMD'
     throw s:Err('E477: No ! allowed', self.ea.cmdpos)
   endif
 
diff --git a/test/test_command.ok b/test/test_command.ok
new file mode 100644
index 0000000..415661e
--- /dev/null
+++ b/test/test_command.ok
@@ -0,0 +1,5 @@
+; test_command
+(excmd "normal! gg")
+(excmd "normal gg")
+(excmd "Usercmd x, y z 123")
+(excmd "Usercmd! with bang")
diff --git a/test/test_command.vim b/test/test_command.vim
new file mode 100644
index 0000000..65d8eb4
--- /dev/null
+++ b/test/test_command.vim
@@ -0,0 +1,5 @@
+" test_command
+normal! gg
+normal gg
+Usercmd x, y z 123
+Usercmd! with bang