diff --git a/features/FEATURE_BLE/targets/TARGET_Maxim/MaximGattServer.cpp b/features/FEATURE_BLE/targets/TARGET_Maxim/MaximGattServer.cpp
index 6cb862c191..8430238d81 100644
--- a/features/FEATURE_BLE/targets/TARGET_Maxim/MaximGattServer.cpp
+++ b/features/FEATURE_BLE/targets/TARGET_Maxim/MaximGattServer.cpp
@@ -146,6 +146,11 @@ ble_error_t MaximGattServer::addService_(GattService &service)
         currAtt->pLen = p_char->getValueAttribute().getLengthPtr();
         currAtt->maxLen = p_char->getValueAttribute().getMaxLength();
         currAtt->settings = ATTS_SET_WRITE_CBACK | ATTS_SET_READ_CBACK;
+
+        if(p_char->getValueAttribute().hasVariableLength()) {
+            currAtt->settings |= ATTS_SET_VARIABLE_LEN;
+        }
+
         if (p_char->getValueAttribute().getUUID().shortOrLong() == UUID::UUID_TYPE_LONG) {
             currAtt->settings |= ATTS_SET_UUID_128;
         }