diff --git a/src/leveled_head.erl b/src/leveled_head.erl
index ad4bbfa..2db0f72 100644
--- a/src/leveled_head.erl
+++ b/src/leveled_head.erl
@@ -444,22 +444,47 @@ assemble_index_specs(Indexes, IndexOp) ->
 
 
 index_extract_test() ->
-    SibMetaBin = <<0,0,0,1,0,0,0,0,0,0,0,221,0,0,6,48,0,4,130,247,0,1,250,134,
-                    1,101,0,0,0,0,4,1,77,68,75,0,0,0,44,0,131,107,0,39,77,68,
-                    86,101,49,55,52,55,48,50,55,45,54,50,99,49,45,52,48,57,55,
-                    45,97,53,102,50,45,53,54,98,51,98,97,57,57,99,55,56,50,0,0,
-                    0,6,1,105,110,100,101,120,0,0,0,79,0,131,108,0,0,0,2,104,2,
-                    107,0,8,105,100,120,49,95,98,105,110,107,0,20,50,49,53,50,
-                    49,49,48,55,50,51,49,55,51,48,83,111,112,104,105,97,104,2,
-                    107,0,8,105,100,120,49,95,98,105,110,107,0,19,50,49,56,50,
-                    48,53,49,48,49,51,48,49,52,54,65,118,101,114,121,106,0,0,0,
-                    5,1,77,68,75,50,0,0,0,44,0,131,107,0,39,77,68,86,101,49,55,
-                    52,55,48,50,55,45,54,50,99,49,45,52,48,57,55,45,97,53,102,
-                    50,45,53,54,98,51,98,97,57,57,99,55,56,50>>,
+    SibMetaBin =
+        <<0,0,0,1,0,0,0,0,0,0,0,221,0,0,6,48,0,4,130,247,0,1,250,134,
+            1,101,0,0,0,0,4,1,77,68,75,0,0,0,44,0,131,107,0,39,77,68,
+            86,101,49,55,52,55,48,50,55,45,54,50,99,49,45,52,48,57,55,
+            45,97,53,102,50,45,53,54,98,51,98,97,57,57,99,55,56,50,0,0,
+            0,6,1,105,110,100,101,120,0,0,0,79,0,131,108,0,0,0,2,104,2,
+            107,0,8,105,100,120,49,95,98,105,110,107,0,20,50,49,53,50,
+            49,49,48,55,50,51,49,55,51,48,83,111,112,104,105,97,104,2,
+            107,0,8,105,100,120,49,95,98,105,110,107,0,19,50,49,56,50,
+            48,53,49,48,49,51,48,49,52,54,65,118,101,114,121,106,0,0,0,
+            5,1,77,68,75,50,0,0,0,44,0,131,107,0,39,77,68,86,101,49,55,
+            52,55,48,50,55,45,54,50,99,49,45,52,48,57,55,45,97,53,102,
+            50,45,53,54,98,51,98,97,57,57,99,55,56,50>>,
     Indexes = get_indexes_from_siblingmetabin(SibMetaBin, []),
     ExpIndexes = [{"idx1_bin","21521107231730Sophia"},
                     {"idx1_bin","21820510130146Avery"}],
-    ?assertMatch(ExpIndexes, Indexes).
+    ?assertMatch(ExpIndexes, Indexes),
+    SibMetaBinNoIdx =
+        <<0,0,0,1,0,0,0,0,0,0,0,128,0,0,6,48,0,4,130,247,0,1,250,134,
+            1,101,0,0,0,0,4,1,77,68,75,0,0,0,44,0,131,107,0,39,77,68,
+            86,101,49,55,52,55,48,50,55,45,54,50,99,49,45,52,48,57,55,
+            45,97,53,102,50,45,53,54,98,51,98,97,57,57,99,55,56,50,0,0,0,
+            5,1,77,68,75,50,0,0,0,44,0,131,107,0,39,77,68,86,101,49,55,
+            52,55,48,50,55,45,54,50,99,49,45,52,48,57,55,45,97,53,102,
+            50,45,53,54,98,51,98,97,57,57,99,55,56,50>>,
+    ?assertMatch([], get_indexes_from_siblingmetabin(SibMetaBinNoIdx, [])),
+    SibMetaBinOverhang =
+        <<0,0,0,1,0,0,0,0,0,0,0,221,0,0,6,48,0,4,130,247,0,1,250,134,
+            1,101,0,0,0,0,4,1,77,68,75,0,0,0,44,0,131,107,0,39,77,68,
+            86,101,49,55,52,55,48,50,55,45,54,50,99,49,45,52,48,57,55,
+            45,97,53,102,50,45,53,54,98,51,98,97,57,57,99,55,56,50,0,0,
+            0,6,1,105,110,100,101,120,0,0,0,79,0,131,108,0,0,0,2,104,2,
+            107,0,8,105,100,120,49,95,98,105,110,107,0,20,50,49,53,50,
+            49,49,48,55,50,51,49,55,51,48,83,111,112,104,105,97,104,2,
+            107,0,8,105,100,120,49,95,98,105,110,107,0,19,50,49,56,50,
+            48,53,49,48,49,51,48,49,52,54,65,118,101,114,121,106,0,0,0,
+            5,1,77,68,75,50,0,0,0,44,0,131,107,0,39,77,68,86,101,49,55,
+            52,55,48,50,55,45,54,50,99,49,45,52,48,57,55,45,97,53,102,
+            50,45,53,54,98,51,98,97,57,57,99,55,56,50,0,0,0,0>>,
+    ?assertMatch(ExpIndexes,
+                    get_indexes_from_siblingmetabin(SibMetaBinOverhang, [])).
 
 diff_index_test() ->
     UpdIndexes =