diff --git a/src/normal.c b/src/normal.c
index ae7b83a..69b0dce 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -2561,7 +2561,8 @@
 	    if (in_tab_line)
 	    {
 		c1 = TabPageIdxs[mouse_col];
-		tabpage_move(c1 <= 0 ? 9999 : c1 - 1);
+		tabpage_move(c1 <= 0 ? 9999 : c1 < tabpage_index(curtab)
+								? c1 - 1 : c1);
 	    }
 	    return FALSE;
 	}
diff --git a/src/version.c b/src/version.c
index a3b567e..3fb4ad2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    857,
+/**/
     856,
 /**/
     855,