diff --git a/src/java/davmail/exchange/ews/EWSMethod.java b/src/java/davmail/exchange/ews/EWSMethod.java
index 4bf5aefe..d19a9f27 100644
--- a/src/java/davmail/exchange/ews/EWSMethod.java
+++ b/src/java/davmail/exchange/ews/EWSMethod.java
@@ -716,7 +716,7 @@ public abstract class EWSMethod extends PostMethod {
                 }
             }
         }
-        if (getStatusCode() == HttpStatus.SC_BAD_REQUEST) {
+        if (getStatusCode() == HttpStatus.SC_BAD_REQUEST || getStatusCode() == HttpStatus.SC_INSUFFICIENT_STORAGE ) {
              throw new EWSException(getStatusText());
         }
     }