diff --git a/libr/core/cmd_seek.c b/libr/core/cmd_seek.c
index 8927575d7b..1b4728bb9e 100644
--- a/libr/core/cmd_seek.c
+++ b/libr/core/cmd_seek.c
@@ -402,6 +402,7 @@ static int cmd_seek(void *data, const char *input) {
 			;
 		}
 		r_core_seek_base (core, input);
+		r_io_sundo_push (core->io, core->offset, r_print_get_cursor (core->print));
 		break;
 	case 'j':  // "sj"
 		{
diff --git a/libr/io/undo.c b/libr/io/undo.c
index 5e5ef43908..3604d8c6f3 100644
--- a/libr/io/undo.c
+++ b/libr/io/undo.c
@@ -44,6 +44,10 @@ R_API RIOUndos *r_io_sundo(RIO *io, ut64 offset) {
 		undo->cursor = 0;
 	}
 
+	// hack to fix undo seek
+	if (io->undo.redos == 0) {
+		io->undo.idx--;
+	}
 	io->undo.idx = (io->undo.idx - 1 + R_IO_UNDOS) % R_IO_UNDOS;
 	io->undo.undos--;
 	io->undo.redos++;