diff --git a/configure.in b/configure.in
index 19470e5142..3709a7ff3f 100644
--- a/configure.in
+++ b/configure.in
@@ -734,8 +734,8 @@ if test x$enable_wireshark = xyes; then
 	CFLAGS="-DGTK_DISABLE_SINGLE_INCLUDES $CFLAGS"
 fi
 
-AC_ARG_ENABLE(ui_manager,
-  AC_HELP_STRING( [--enable-uimanager],
+AC_ARG_ENABLE(ui-manager,
+  AC_HELP_STRING( [--enable-ui-manager],
                   [use ui-manager in Wireshark (experimental).  @<:@default=no@:>@]),
     enable_uimanager=$enableval,enable_uimanager=no)
 if test x$enable_uimanager = xyes; then