diff --git CMakeLists.txt CMakeLists.txt
index 4f82ba9..a985234 100644
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -365,7 +365,7 @@ if(HAVE_LIBPYTHON)
 endif()
 if(HAVE_LIBLUA)
 	set(HAVE_LUA_H 1)
-	set(HAVE_LUA_5_1 1)
+	set(HAVE_LUA 1)
 endif()
 if(HAVE_LIBKERBEROS)
 	set(HAVE_KERBEROS 1)
diff --git Makefile.nmake Makefile.nmake
index a6ecdf8..ac4c410 100644
--- Makefile.nmake
+++ Makefile.nmake
@@ -409,7 +409,7 @@ config.h	: config.h.win32 config.nmake
 	    -e "s/@HAVE_LIBGNUTLS@/$(GNUTLS_CONFIG)/" \
 	    -e "s/@HAVE_LIBGCRYPT@/$(LIBGCRYPT_CONFIG)/" \
 	    -e "s/@HAVE_LUA@/$(LUA_CONFIG)/" \
-	    -e "s/@HAVE_LUA_5_1@/$(LUA_VERSION)/" \
+	    -e "s/@HAVE_LUA@/$(LUA_VERSION)/" \
 	    -e "s/@HAVE_PYTHON@/$(PYTHON_CONFIG)/" \
 	    -e "s/@HAVE_AIRPCAP@/$(AIRPCAP_CONFIG)/" \
 	    -e "s/@HAVE_AIRPDCAP@/$(AIRPDCAP_CONFIG)/" \
diff --git acinclude.m4 acinclude.m4
index 4ddc54c..ee63237 100644
--- acinclude.m4
+++ acinclude.m4
@@ -938,7 +938,7 @@ AC_DEFUN([AC_WIRESHARK_LIBLUA_CHECK],[
 				LUA_LIBS="-llua -lm"
 				LUA_INCLUDES=""
 			fi
-			AC_DEFINE(HAVE_LUA_5_1, 1, [Define to use Lua ${lua_ver}])
+			AC_DEFINE(HAVE_LUA, 1, [Define to use Lua ${lua_ver}])
 			want_lua=yes
 
 		],[
@@ -954,7 +954,7 @@ AC_DEFUN([AC_WIRESHARK_LIBLUA_CHECK],[
 			    #  Lua found
 			    #
 			    LUA_LIBS=" -llua${lua_ver} -lm"
-			    AC_DEFINE(HAVE_LUA_5_1, 1, [Define to use Lua ${lua_ver}])
+			    AC_DEFINE(HAVE_LUA, 1, [Define to use Lua ${lua_ver}])
 			    want_lua=yes
 			],[
 				#
diff --git cmakeconfig.h.in cmakeconfig.h.in
index f0ed5ff..f2bd8e6 100644
--- cmakeconfig.h.in
+++ cmakeconfig.h.in
@@ -136,7 +136,7 @@
 #cmakedefine HAVE_LUALIB_H 1
 
 /* Define to use Lua 5.1 */
-#cmakedefine HAVE_LUA_5_1 1
+#cmakedefine HAVE_LUA 1
 
 /* Define to 1 if you have the <lua.h> header file. */
 #cmakedefine HAVE_LUA_H 1
diff --git config.h.win32 config.h.win32
index d66faeb..82130b2 100644
--- config.h.win32
+++ config.h.win32
@@ -203,7 +203,7 @@
 
 /* Define to use Lua */
 @HAVE_LUA@
-@HAVE_LUA_5_1@
+@HAVE_LUA@
 
 /* Define to use Python */
 @HAVE_PYTHON@
diff --git config.nmake config.nmake
index 6f32dc6..d45e9b9 100644
--- config.nmake
+++ config.nmake
@@ -1274,7 +1274,7 @@ LUA_CFLAGS=/I$(LUA_DIR)\include
 LUA_LIBS=$(LUA_DIR)\lua5.1.lib
 # Nmake uses carets to escape special characters
 LUA_CONFIG=^#define HAVE_LUA 1
-LUA_VERSION=^#define HAVE_LUA_5_1 1
+LUA_VERSION=^#define HAVE_LUA 1
 !else
 LUA_CFLAGS=
 LUA_LIBS=
diff --git epan/epan.c epan/epan.c
index 5380260..f28cb61 100644
--- epan/epan.c
+++ epan/epan.c
@@ -54,7 +54,7 @@
 #include "emem.h"
 #include "expert.h"
 
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
 #include <lua.h>
 #include <wslua/wslua.h>
 #endif
@@ -117,7 +117,7 @@ epan_init(void (*register_all_protocols_func)(register_cb cb, gpointer client_da
 	final_registration_all_protocols();
 	host_name_lookup_init();
 	expert_init();
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
 	wslua_init(cb, client_data);
 #endif
 #ifdef HAVE_GEOIP
@@ -295,12 +295,12 @@ epan_get_compiled_version_info(GString *str)
 
         /* LUA */
 	g_string_append(str, ", ");
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
 	g_string_append(str, "with ");
 	g_string_append(str, LUA_VERSION);
 #else
 	g_string_append(str, "without Lua");
-#endif /* HAVE_LUA_5_1 */
+#endif /* HAVE_LUA */
 
 	g_string_append(str, ", ");
 #ifdef HAVE_PYTHON
diff --git epan/filesystem.c epan/filesystem.c
index ea41a10..761d170 100644
--- epan/filesystem.c
+++ epan/filesystem.c
@@ -771,7 +771,7 @@ get_wspython_dir(void)
 }
 
 
-#if defined(HAVE_PLUGINS) || defined(HAVE_LUA_5_1)
+#if defined(HAVE_PLUGINS) || defined(HAVE_LUA)
 /*
  * Find the directory where the plugins are stored.
  *
@@ -850,7 +850,7 @@ init_plugin_dir(void)
     }
 #endif
 }
-#endif /* HAVE_PLUGINS || HAVE_LUA_5_1 */
+#endif /* HAVE_PLUGINS || HAVE_LUA */
 
 /*
  * Get the directory in which the plugins are stored.
@@ -858,7 +858,7 @@ init_plugin_dir(void)
 const char *
 get_plugin_dir(void)
 {
-#if defined(HAVE_PLUGINS) || defined(HAVE_LUA_5_1)
+#if defined(HAVE_PLUGINS) || defined(HAVE_LUA)
     if (!plugin_dir) init_plugin_dir();
     return plugin_dir;
 #else
diff --git epan/plugins.c epan/plugins.c
index 2e8e863..3af1d80 100644
--- epan/plugins.c
+++ epan/plugins.c
@@ -519,7 +519,7 @@ plugins_dump_all(void)
     plugin     *pt_plug;
     const char *sep;
 #endif
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
     wslua_plugin  *lua_plug;
 #endif
 
@@ -552,7 +552,7 @@ plugins_dump_all(void)
     }
 #endif
 
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
     for (lua_plug = wslua_plugin_list; lua_plug != NULL; lua_plug = lua_plug->next)
     {
         printf("%s\t%s\tlua script\t%s\n", lua_plug->name, lua_plug->version, lua_plug->filename);
diff --git epan/wslua/wslua.h epan/wslua/wslua.h
index a919543..4c0faab 100644
--- epan/wslua/wslua.h
+++ epan/wslua/wslua.h
@@ -297,7 +297,7 @@ C shift##C(lua_State* L,int i) { \
 } \
 typedef int dummy##C
 
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
 
 #if LUA_VERSION_NUM == 502
 #define WSLUA_REGISTER_CLASS(C) { \
diff --git ui/gtk/about_dlg.c ui/gtk/about_dlg.c
index 5c56ecb..e444cd0 100644
--- ui/gtk/about_dlg.c
+++ ui/gtk/about_dlg.c
@@ -247,7 +247,7 @@ splash_update(register_action_e action, const char *message, gpointer client_dat
 					  dissectors, listeners,
 					  registering plugins, handingoff plugins,
 					  preferences and configuration */
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
       ul_count++;   /* additional one for lua plugins */
 #endif
 #ifdef HAVE_PYTHON
@@ -438,7 +438,7 @@ about_folders_page_new(void)
   about_folders_row(table, "Program", constpath,
       "program files");
 
-#if defined(HAVE_PLUGINS) || defined(HAVE_LUA_5_1)
+#if defined(HAVE_PLUGINS) || defined(HAVE_LUA)
   /* pers plugins */
   path = get_plugins_pers_dir();
   about_folders_row(table, "Personal Plugins", path,
@@ -509,7 +509,7 @@ about_wireshark_cb( GtkWidget *w _U_, gpointer data _U_ )
   GtkWidget   *main_box, *main_nb, *bbox, *ok_btn;
   GtkWidget   *page_lb, *about_page, *folders_page;
 
-#if defined(HAVE_PLUGINS) || defined(HAVE_LUA_5_1)
+#if defined(HAVE_PLUGINS) || defined(HAVE_LUA)
   GtkWidget   *plugins_page;
 #endif
 
@@ -553,7 +553,7 @@ about_wireshark_cb( GtkWidget *w _U_, gpointer data _U_ )
   page_lb = gtk_label_new("Folders");
   gtk_notebook_append_page(GTK_NOTEBOOK(main_nb), folders_page, page_lb);
 
-#if defined(HAVE_PLUGINS) || defined(HAVE_LUA_5_1)
+#if defined(HAVE_PLUGINS) || defined(HAVE_LUA)
   plugins_page = about_plugins_page_new();
   page_lb = gtk_label_new("Plugins");
   gtk_notebook_append_page(GTK_NOTEBOOK(main_nb), plugins_page, page_lb);
diff --git ui/gtk/main_menubar.c ui/gtk/main_menubar.c
index ab62ec9..17fe44c 100644
--- ui/gtk/main_menubar.c
+++ ui/gtk/main_menubar.c
@@ -3708,7 +3708,7 @@ make_menu_xml(const char *path) {
  * Creates an action group for the menu items in xpath, and returns it. The caller should
  * use g_object_unref() on the returned pointer if transferring scope.
  */
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
 /* NOTE currently only used from Lua, remove this ifdef when used
   outside of #ifdef LUA */
 static GtkActionGroup*
@@ -3797,7 +3797,7 @@ make_menu_actions(const char *path, const menu_item_t *menu_item_data) {
 static void
 merge_lua_menu_items(GList *merge_lua_menu_items_list _U_)
 {
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
     guint merge_id;
     GtkActionGroup *action_group;
     menu_item_t *menu_item_data;
diff --git ui/gtk/plugins_dlg.c ui/gtk/plugins_dlg.c
index 543cc5f..c6f0c4e 100644
--- ui/gtk/plugins_dlg.c
+++ ui/gtk/plugins_dlg.c
@@ -35,7 +35,7 @@
 #include "ui/gtk/plugins_dlg.h"
 
 
-#if defined(HAVE_PLUGINS) || defined(HAVE_LUA_5_1)
+#if defined(HAVE_PLUGINS) || defined(HAVE_LUA)
 
 /*
  * Fill the list widget with a list of the plugin modules.
@@ -48,7 +48,7 @@ plugins_scan(GtkWidget *list)
     plugin     *pt_plug;
     const char *sep;
 #endif
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
     wslua_plugin  *lua_plug;
 #endif
     GString    *type;
@@ -86,7 +86,7 @@ plugins_scan(GtkWidget *list)
     }
 #endif
 
-#ifdef HAVE_LUA_5_1
+#ifdef HAVE_LUA
     for (lua_plug = wslua_plugin_list; lua_plug != NULL; lua_plug = lua_plug->next)
     {
         type = g_string_new("");
@@ -119,4 +119,4 @@ about_plugins_page_new(void)
     return scrolledwindow;
 }
 
-#endif /* HAVE_PLUGINS || HAVE_LUA_5_1 */
+#endif /* HAVE_PLUGINS || HAVE_LUA */