diff --git a/app/src/main/java/info/nightscout/utils/DateUtil.java b/app/src/main/java/info/nightscout/utils/DateUtil.java
index 1b6f857c96..a0f52f2abc 100644
--- a/app/src/main/java/info/nightscout/utils/DateUtil.java
+++ b/app/src/main/java/info/nightscout/utils/DateUtil.java
@@ -13,7 +13,7 @@ public class DateUtil
 {
 
     /** The date format in iso. */
-    public static String FORMAT_DATE_ISO="yyyy-MM-dd'T'HH:mm:ssZ";
+    public static String FORMAT_DATE_ISO="yyyy-MM-dd'T'HH:mm:ss'Z'";
 
     /**
      * Takes in an ISO date string of the following format: