diff --git a/src/FileCursor.js b/src/FileCursor.js
index 9b11c6b6c..12d5ab981 100644
--- a/src/FileCursor.js
+++ b/src/FileCursor.js
@@ -442,7 +442,7 @@ function newFileCursor() {
           if (beginDateRange !== undefined) {
             let compareBeginDate = removeTime(beginDateRange)
 
-            if (compareTargetDate.valueOf() < compareBeginDate) {
+            if (compareTargetDate.valueOf() < compareBeginDate.valueOf()) {
               controlLoop()
               return
             }
@@ -451,7 +451,7 @@ function newFileCursor() {
           if (endDateRange !== undefined) {
             let compareEndDate = removeTime(endDateRange)
 
-            if (compareTargetDate.valueOf() > compareEndDate) {
+            if (compareTargetDate.valueOf() > compareEndDate.valueOf()) {
               controlLoop()
               return
             }