diff --git a/lodash.js b/lodash.js
index 8d752e2fd..0669a1ea4 100644
--- a/lodash.js
+++ b/lodash.js
@@ -859,9 +859,12 @@
         low = 0,
         high = array.length;
 
+    if (callback) {
+      value = callback(value);
+    }
     while (low < high) {
       mid = (low + high) >> 1;
-      if (callback ? callback(array[mid]) < callback(value) : array[mid] < value) {
+      if ((callback ? callback(array[mid]) : array[mid]) < value) {
         low = mid + 1;
       } else {
         high = mid;
diff --git a/lodash.min.js b/lodash.min.js
index 12e99921d..7b556ba7d 100644
--- a/lodash.min.js
+++ b/lodash.min.js
@@ -4,13 +4,13 @@
 */
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