diff --git a/includes/class-form-renderer.php b/includes/class-form-renderer.php
index 076ca78..0266b50 100644
--- a/includes/class-form-renderer.php
+++ b/includes/class-form-renderer.php
@@ -564,7 +564,7 @@ class Umzugsliste_Form_Renderer {
 						<input type="checkbox" name="<?php echo esc_attr( $field_name ); ?>" value="ja">
 						<?php echo esc_html( $field['name'] ); ?>
 					</label>
-					<input type="text" name="<?php echo esc_attr( $field_name . '_anzahl' ); ?>" class="qty-small" placeholder="<?php echo esc_attr__( 'Qty.', 'siegel-umzugsliste' ); ?>">
+					<input type="text" name="<?php echo esc_attr( substr( $field_name, 0, -1 ) . '_anzahl]' ); ?>" class="qty-small" placeholder="<?php echo esc_attr__( 'Qty.', 'siegel-umzugsliste' ); ?>">
 				</div>
 				<?php
 				break;