diff --git a/src/evalfunc.c b/src/evalfunc.c
index 449bc67..3875b43 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -231,9 +231,7 @@
 static void f_matchstrpos(typval_T *argvars, typval_T *rettv);
 static void f_max(typval_T *argvars, typval_T *rettv);
 static void f_min(typval_T *argvars, typval_T *rettv);
-#ifdef vim_mkdir
 static void f_mkdir(typval_T *argvars, typval_T *rettv);
-#endif
 static void f_mode(typval_T *argvars, typval_T *rettv);
 #ifdef FEAT_MZSCHEME
 static void f_mzeval(typval_T *argvars, typval_T *rettv);
@@ -694,9 +692,7 @@
     {"matchstrpos",	2, 4, f_matchstrpos},
     {"max",		1, 1, f_max},
     {"min",		1, 1, f_min},
-#ifdef vim_mkdir
     {"mkdir",		1, 3, f_mkdir},
-#endif
     {"mode",		0, 1, f_mode},
 #ifdef FEAT_MZSCHEME
     {"mzeval",		1, 1, f_mzeval},
@@ -7945,7 +7941,6 @@
     return r;
 }
 
-#ifdef vim_mkdir
 /*
  * "mkdir()" function
  */
@@ -7989,7 +7984,6 @@
     }
     rettv->vval.v_number = vim_mkdir_emsg(dir, prot);
 }
-#endif
 
 /*
  * "mode()" function
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 601c51b..1ddd28f 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -307,7 +307,6 @@
 static char_u	*arg_all(void);
 #ifndef FEAT_SESSION
 # define ex_loadview		ex_ni
-# define ex_mkrc		ex_ni
 #endif
 #ifndef FEAT_EVAL
 # define ex_compiler		ex_ni
@@ -8433,8 +8432,7 @@
 #endif
 }
 
-#if ((defined(FEAT_SESSION) || defined(FEAT_EVAL)) && defined(vim_mkdir)) \
-	|| defined(PROTO)
+#if (defined(FEAT_SESSION) || defined(FEAT_EVAL)) || defined(PROTO)
     int
 vim_mkdir_emsg(char_u *name, int prot)
 {
diff --git a/src/feature.h b/src/feature.h
index 74ea8d5..e46947d 100644
--- a/src/feature.h
+++ b/src/feature.h
@@ -559,9 +559,9 @@
 
 /*
  * +mksession		":mksession" command.
- *			Requires +windows and +vertsplit.
+ *			fully depends on +eval
  */
-#if defined(FEAT_NORMAL)
+#if defined(FEAT_EVAL)
 # define FEAT_SESSION
 #endif
 
diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
index 509cfc2..4940b87 100644
--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -159,7 +159,11 @@
  */
 # define DEFAULT_FONT	"Monospace 10"
 
-#if !(defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION))
+#if defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)
+# define USE_GNOME_SESSION
+#endif
+
+#if !defined(FEAT_GUI_GNOME)
 /*
  * Atoms used to communicate save-yourself from the X11 session manager. There
  * is no need to move them into the GUI struct, since they should be constant.
@@ -377,7 +381,7 @@
 static char **gui_argv = NULL;
 
 static const char *role_argument = NULL;
-#if defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)
+#if defined(USE_GNOME_SESSION)
 static const char *restart_command = NULL;
 static       char *abs_restart_command = NULL;
 #endif
@@ -404,7 +408,7 @@
     int			    i	= 0;
     int			    len = 0;
 
-#if defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)
+#if defined(USE_GNOME_SESSION)
     /*
      * Determine the command used to invoke Vim, to be passed as restart
      * command to the session manager.	If argv[0] contains any directory
@@ -580,7 +584,7 @@
 gui_mch_free_all(void)
 {
     vim_free(gui_argv);
-#if defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)
+#if defined(USE_GNOME_SESSION)
     vim_free(abs_restart_command);
 #endif
 }
@@ -2274,7 +2278,7 @@
 #endif /* FEAT_DND */
 
 
-#if defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)
+#if defined(USE_GNOME_SESSION)
 /*
  * GnomeClient interact callback.  Check for unsaved buffers that cannot
  * be abandoned and pop up a dialog asking the user for confirmation if
@@ -2437,7 +2441,7 @@
     }
 }
 
-#else /* !(FEAT_GUI_GNOME && FEAT_SESSION) */
+#else // !USE_GNOME_SESSION
 
 # ifdef USE_XSMP
 /*
@@ -2571,7 +2575,7 @@
 
     return GDK_FILTER_CONTINUE;
 }
-#endif /* !(FEAT_GUI_GNOME && FEAT_SESSION) */
+#endif // !USE_GNOME_SESSION
 
 
 /*
@@ -2624,14 +2628,14 @@
 	g_list_free(icons);
     }
 
-#if !(defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION))
+#if !defined(USE_GNOME_SESSION)
     /* Register a handler for WM_SAVE_YOURSELF with GDK's low-level X I/F */
     gdk_window_add_filter(NULL, &global_event_filter, NULL);
 #endif
     /* Setup to indicate to the window manager that we want to catch the
      * WM_SAVE_YOURSELF event.	For GNOME, this connects to the session
      * manager instead. */
-#if defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)
+#if defined(USE_GNOME_SESSION)
     if (using_gnome)
 #endif
 	setup_save_yourself();
@@ -3933,7 +3937,7 @@
     gui.visibility = GDK_VISIBILITY_UNOBSCURED;
 #endif
 
-#if !(defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION))
+#if !defined(USE_GNOME_SESSION)
     wm_protocols_atom = gdk_atom_intern("WM_PROTOCOLS", FALSE);
     save_yourself_atom = gdk_atom_intern("WM_SAVE_YOURSELF", FALSE);
 #endif
@@ -4039,7 +4043,7 @@
     return OK;
 }
 
-#if (defined(FEAT_GUI_GNOME) && defined(FEAT_SESSION)) || defined(PROTO)
+#if defined(USE_GNOME_SESSION) || defined(PROTO)
 /*
  * This is called from gui_start() after a fork() has been done.
  * We have to tell the session manager our new PID.
@@ -4057,7 +4061,7 @@
 	    gnome_client_set_process_id(client, getpid());
     }
 }
-#endif /* FEAT_GUI_GNOME && FEAT_SESSION */
+#endif // USE_GNOME_SESSION
 
 #if GTK_CHECK_VERSION(3,0,0)
     static GdkRGBA
diff --git a/src/proto.h b/src/proto.h
index 6415112..2257012 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -183,9 +183,7 @@
 # endif
 # include "regexp.pro"
 # include "screen.pro"
-# ifdef FEAT_SESSION
-#  include "session.pro"
-# endif
+# include "session.pro"
 # if defined(FEAT_CRYPT) || defined(FEAT_PERSISTENT_UNDO)
 #  include "sha256.pro"
 # endif
diff --git a/src/session.c b/src/session.c
index aa95be1..473d94f 100644
--- a/src/session.c
+++ b/src/session.c
@@ -1063,7 +1063,6 @@
 static int mksession_nl = FALSE;    // use NL only in put_eol()
 #endif
 
-#if defined(FEAT_SESSION) || defined(PROTO)
 /*
  * ":mkexrc", ":mkvimrc", ":mkview" and ":mksession".
  */
@@ -1244,10 +1243,10 @@
 	    if (put_line(fd, "let &so = s:so_save | let &siso = s:siso_save")
 								      == FAIL)
 		failed = TRUE;
-# ifdef FEAT_SEARCH_EXTRA
+#ifdef FEAT_SEARCH_EXTRA
 	    if (no_hlsearch && put_line(fd, "nohlsearch") == FAIL)
 		failed = TRUE;
-# endif
+#endif
 	    if (put_line(fd, "doautoall SessionLoadPost") == FAIL)
 		failed = TRUE;
 	    if (eap->cmdidx == CMD_mksession)
@@ -1264,7 +1263,7 @@
 
 	if (failed)
 	    emsg(_(e_write));
-#if defined(FEAT_EVAL) && defined(FEAT_SESSION)
+#if defined(FEAT_SESSION)
 	else if (eap->cmdidx == CMD_mksession)
 	{
 	    // successful session write - set this_session var
@@ -1293,9 +1292,7 @@
 #endif
 }
 
-#endif // FEAT_SESSION
-
-#if defined(FEAT_VIMINFO) || defined(FEAT_SESSION)
+#if (defined(FEAT_VIMINFO) || defined(FEAT_SESSION)) || defined(PROTO)
     var_flavour_T
 var_flavour(char_u *varname)
 {
diff --git a/src/version.c b/src/version.c
index 4e155e9..496a2ee 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1767,
+/**/
     1766,
 /**/
     1765,