diff --git a/src/main.c b/src/main.c
index e1573a0..66726d2 100644
--- a/src/main.c
+++ b/src/main.c
@@ -147,8 +147,8 @@
 #define ME_INVALID_ARG		5
 };
 
-#ifndef NO_VIM_MAIN	/* skip this for unittests */
 #ifndef PROTO		/* don't want a prototype for main() */
+#ifndef NO_VIM_MAIN	/* skip this for unittests */
     int
 # ifdef VIMDLL
 _export
@@ -570,15 +570,27 @@
 	return mzscheme_main(2, args);
     }
 }
+#endif
+#endif /* NO_VIM_MAIN */
 
-int vim_main2(int argc, char **argv)
+/* vim_main2() needs to be produced when FEAT_MZSCHEME is defined even when
+ * NO_VIM_MAIN is defined. */
+#ifdef FEAT_MZSCHEME
+    int
+vim_main2(int argc UNUSED, char **argv UNUSED)
 {
+# ifndef NO_VIM_MAIN
     char_u	*fname = (char_u *)argv[0];
     mparm_T	params;
 
     memcpy(&params, argv[1], sizeof(params));
+# else
+    return 0;
+}
+# endif
 #endif
 
+#ifndef NO_VIM_MAIN
     /* Execute --cmd arguments. */
     exe_pre_commands(&params);
 
@@ -999,8 +1011,8 @@
 
     return 0;
 }
-#endif /* PROTO */
 #endif /* NO_VIM_MAIN */
+#endif /* PROTO */
 
 /*
  * Main loop: Execute Normal mode commands until exiting Vim.
diff --git a/src/version.c b/src/version.c
index d537c37..3582fbc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -726,6 +726,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    733,
+/**/
     732,
 /**/
     731,