diff --git a/syntax_checkers/tcl.vim b/syntax_checkers/tcl.vim
index a6c96c69..1b639818 100644
--- a/syntax_checkers/tcl.vim
+++ b/syntax_checkers/tcl.vim
@@ -20,7 +20,7 @@ endif
 let loaded_tcl_syntax_checker = 1
 
 
-let s:supported_checkers = ["tclsh", "nagelfar.tcl"]
+let s:supported_checkers = ["tclsh", "nagelfar"]
 
 function! s:load_checker(checker)
     exec "runtime syntax_checkers/tcl/" . a:checker . ".vim"
diff --git a/syntax_checkers/tcl/nagelfar.tcl.vim b/syntax_checkers/tcl/nagelfar.vim
similarity index 89%
rename from syntax_checkers/tcl/nagelfar.tcl.vim
rename to syntax_checkers/tcl/nagelfar.vim
index e62221a4..769fb4be 100644
--- a/syntax_checkers/tcl/nagelfar.tcl.vim
+++ b/syntax_checkers/tcl/nagelfar.vim
@@ -10,7 +10,7 @@
 "
 "============================================================================
 function! SyntaxCheckers_tcl_GetLocList()
-    let makeprg = "nagelfar.tcl -H " . g:syntastic_tcl_nagelfar_conf . " " . shellescape(expand('%'))
+    let makeprg = "nagelfar -H " . g:syntastic_tcl_nagelfar_conf . " " . shellescape(expand('%'))
 
     let errorformat='%I%f: %l: N %m, %f: %l: %t %m, %-GChecking file %f'