diff --git a/apps/showcase/doc/common/apidoc/index.json b/apps/showcase/doc/common/apidoc/index.json
index 8252d6830..98ea20300 100644
--- a/apps/showcase/doc/common/apidoc/index.json
+++ b/apps/showcase/doc/common/apidoc/index.json
@@ -21584,7 +21584,7 @@
                                 {
                                     "name": "scope",
                                     "optional": false,
-                                    "type": "{\n \t <span class=\"ml-3 doc-option-parameter-name\">toggleCallback</span>: <span class=\"doc-option-parameter-type\">(<span class=\"doc-option-parameter-name\">event</span>: Event) &rArr; void</span>, <span class=\"doc-option-parameter-type\">// Toggle function.</span>\n}"
+                                    "type": "{\n \t <span class=\"ml-3 doc-option-parameter-name\">toggleCallback</span>: <span class=\"doc-option-parameter-type\">() &rArr; void</span>, <span class=\"doc-option-parameter-type\">// Toggle function.</span>\n}"
                                 }
                             ],
                             "returnType": "VNode<RendererNode, RendererElement, Object>[]",
diff --git a/packages/primevue/src/datepicker/DatePicker.vue b/packages/primevue/src/datepicker/DatePicker.vue
index a7308bed3..8677a8907 100755
--- a/packages/primevue/src/datepicker/DatePicker.vue
+++ b/packages/primevue/src/datepicker/DatePicker.vue
@@ -32,7 +32,7 @@
             @keydown="onKeyDown"
             :pt="ptm('pcInputText')"
         />
-        <slot v-if="showIcon && iconDisplay === 'button' && !inline" name="dropdownbutton">
+        <slot v-if="showIcon && iconDisplay === 'button' && !inline" name="dropdownbutton" :toggleCallback="onButtonClick">
             <button
                 :class="cx('dropdown')"
                 :disabled="disabled"