diff --git a/searching/README.md b/searching/README.md
index fb89fd2..25fb960 100644
--- a/searching/README.md
+++ b/searching/README.md
@@ -2,7 +2,7 @@
 
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-* a binary search operates on a contiguous sequence with a specified left and right index (this is called the **search space**).
+* a binary search operates on a (sorted) contiguous sequence with a specified left and right index (this is called the **search space**).
   
 * binary searching is composed of 3 sections:
     * **pre-processing**: sort if collection is unsorted