diff --git a/kernel/kshell.c b/kernel/kshell.c
index 0d99aff..1714060 100644
--- a/kernel/kshell.c
+++ b/kernel/kshell.c
@@ -4,6 +4,7 @@ This software is distributed under the GNU General Public License.
 See the file LICENSE for details.
 */
 
+#include "kernel/config.h"
 #include "kernel/types.h"
 #include "kernel/error.h"
 #include "kernel/ascii.h"
@@ -22,6 +23,10 @@ See the file LICENSE for details.
 #include "bcache.h"
 #include "printf.h"
 
+#ifdef KSHELL_EXT
+  #include "kshell_ext.c"
+#endif
+
 static int kshell_mount( const char *devname, int unit, const char *fs_type)
 {
 	if(current->ktable[KNO_STDDIR]) {
@@ -350,7 +355,12 @@ int kshell_execute(int argc, const char **argv)
 		bcache_flush_all();
 	} else if(!strcmp(cmd, "help")) {
 		printf("Kernel Shell Commands:\nrun <path> <args>\nstart <path> <args>\nkill <pid>\nreap <pid>\nwait\nlist\nautomount\nmount <device> <unit> <fstype>\numount\nformat <device> <unit><fstype>\ninstall atapi <srcunit> ata <dstunit>\nmkdir <path>\nremove <path>time\nbcache_stats\nbcache_flush\nreboot\nhelp\n\n");
-	} else {
+#ifdef KSHELL_EXT_EXECUTE
+  #include "kshell_ext_execute.c"
+#else
+  }
+#endif
+	else {
 		printf("%s: command not found\n", argv[0]);
 	}
 	return 0;