diff --git a/runtime/compiler/bdf.vim b/runtime/compiler/bdf.vim
index 133e980..77f124c 100644
--- a/runtime/compiler/bdf.vim
+++ b/runtime/compiler/bdf.vim
@@ -8,16 +8,12 @@
 endif
 let current_compiler = "bdf"
 
-if exists(":CompilerSet") != 2
-  command -nargs=* CompilerSet setlocal <args>
-endif
-
 let s:cpo_save = &cpo
 set cpo-=C
 
-CompilerSet makeprg=bdftopcf\ $*
+setlocal makeprg=bdftopcf\ $*
 
-CompilerSet errorformat=%ABDF\ %trror\ on\ line\ %l:\ %m,
+setlocal errorformat=%ABDF\ %trror\ on\ line\ %l:\ %m,
       \%-Z%p^,
       \%Cbdftopcf:\ bdf\ input\\,\ %f\\,\ corrupt,
       \%-G%.%#
diff --git a/runtime/compiler/gcc.vim b/runtime/compiler/gcc.vim
index 1e64f32..11f7714 100644
--- a/runtime/compiler/gcc.vim
+++ b/runtime/compiler/gcc.vim
@@ -8,14 +8,10 @@
 endif
 let current_compiler = "gcc"
 
-if exists(":CompilerSet") != 2
-  command -nargs=* CompilerSet setlocal <args>
-endif
-
 let s:cpo_save = &cpo
 set cpo-=C
 
-CompilerSet errorformat=
+setlocal errorformat=
       \%*[^\"]\"%f\"%*\\D%l:\ %m,
       \\"%f\"%*\\D%l:\ %m,
       \%-G%f:%l:\ %trror:\ (Each\ undeclared\ identifier\ is\ reported\ only\ once,
diff --git a/runtime/compiler/rst.vim b/runtime/compiler/rst.vim
index f983fe7..828f99e 100644
--- a/runtime/compiler/rst.vim
+++ b/runtime/compiler/rst.vim
@@ -8,14 +8,10 @@
 endif
 let current_compiler = "rst"
 
-if exists(":CompilerSet") != 2
-  command -nargs=* CompilerSet setlocal <args>
-endif
-
 let s:cpo_save = &cpo
 set cpo-=C
 
-CompilerSet errorformat=
+setlocal errorformat=
       \%f:%l:\ (%tEBUG/0)\ %m,
       \%f:%l:\ (%tNFO/1)\ %m,
       \%f:%l:\ (%tARNING/2)\ %m,