diff --git a/src/BeSimple/SoapWsdl/Dumper/Dumper.php b/src/BeSimple/SoapWsdl/Dumper/Dumper.php
index 5e2ae46..b527605 100644
--- a/src/BeSimple/SoapWsdl/Dumper/Dumper.php
+++ b/src/BeSimple/SoapWsdl/Dumper/Dumper.php
@@ -278,11 +278,15 @@ class Dumper
 
             if ($child->isNillable()) {
                 $element->setAttribute('minOccurs', 0);
+            } else {
+                $element->setAttribute('minOccurs', 1);
             }
 
             if ($type instanceof ArrayOfType || $isArray) {
                 $element->setAttribute('minOccurs', 0);
                 $element->setAttribute('maxOccurs', 'unbounded');
+            } else {
+                $element->setAttribute('maxOccurs', 1);
             }
 
             if ($child->isAttribute()) {