diff --git a/app/src/main/java/com/ericsson/uecontrol/core/behaviour/UeBehaviourFtpUpload.java b/app/src/main/java/com/ericsson/uecontrol/core/behaviour/UeBehaviourFtpUpload.java
index a841183..98d10b4 100755
--- a/app/src/main/java/com/ericsson/uecontrol/core/behaviour/UeBehaviourFtpUpload.java
+++ b/app/src/main/java/com/ericsson/uecontrol/core/behaviour/UeBehaviourFtpUpload.java
@@ -122,6 +122,6 @@ public class UeBehaviourFtpUpload extends UeBehaviourFtp {
     }
 
     private boolean isLong(String str){
-        return sizeOrFile != null && Pattern.matches("\\d{1,19}", str);
+        return sizeOrFile != null && Pattern.matches("\\d{1,18}", str);
     }
 }