diff --git a/libs/angular-accelerator/assets/i18n/de.json b/libs/angular-accelerator/assets/i18n/de.json
index 1c9bb4fa..9ed20489 100644
--- a/libs/angular-accelerator/assets/i18n/de.json
+++ b/libs/angular-accelerator/assets/i18n/de.json
@@ -73,6 +73,7 @@
       "ARIA_LABEL": "{{column}} {{direction}} sortieren"
     },
     "SELECT_ALL_ARIA_LABEL": "Selektiere alle Zeilen der Tabelle",
+    "SELECT_ALL_TOOLTIP": "Selektiere alle",
     "SELECT_ARIA_LABEL": "Selektiere die Tabellenspalte mit der ID {{key}}",
     "FILTER_YES": "Ja",
     "FILTER_NO": "Nein"
diff --git a/libs/angular-accelerator/assets/i18n/en.json b/libs/angular-accelerator/assets/i18n/en.json
index 4ff99916..1432948a 100644
--- a/libs/angular-accelerator/assets/i18n/en.json
+++ b/libs/angular-accelerator/assets/i18n/en.json
@@ -73,6 +73,7 @@
       "ARIA_LABEL": "Toggle {{column}} sorting direction to {{direction}}"
     },
     "SELECT_ALL_ARIA_LABEL": "Select all table rows",
+    "SELECT_ALL_TOOLTIP": "Select all",
     "SELECT_ARIA_LABEL": "Select table row with id {{key}}",
     "FILTER_YES": "Yes",
     "FILTER_NO": "No"
diff --git a/libs/angular-accelerator/src/lib/components/data-table/data-table.component.html b/libs/angular-accelerator/src/lib/components/data-table/data-table.component.html
index 4596fe99..e9fa0e7d 100644
--- a/libs/angular-accelerator/src/lib/components/data-table/data-table.component.html
+++ b/libs/angular-accelerator/src/lib/components/data-table/data-table.component.html
@@ -135,6 +135,7 @@
         <th style="width: 4rem" scope="col" *ngIf="selectionChangedObserved">
           <p-tableHeaderCheckbox
             *ngIf="allowSelectAll"
+            pTooltip="{{'OCX_DATA_TABLE.SELECT_ALL_TOOLTIP' | translate}}"
             ariaLabel="{{'OCX_DATA_TABLE.SELECT_ALL_ARIA_LABEL' | translate}}"
           ></p-tableHeaderCheckbox>
         </th>
diff --git a/libs/portal-integration-angular/assets/i18n/de.json b/libs/portal-integration-angular/assets/i18n/de.json
index 5d182b8e..3f69dfb5 100644
--- a/libs/portal-integration-angular/assets/i18n/de.json
+++ b/libs/portal-integration-angular/assets/i18n/de.json
@@ -94,6 +94,7 @@
       "ARIA_LABEL": "{{column}} {{direction}} sortieren"
     },
     "SELECT_ALL_ARIA_LABEL": "Selektiere alle Zeilen der Tabelle",
+    "SELECT_ALL_TOOLTIP": "Selektiere alle",
     "SELECT_ARIA_LABEL": "Selektiere die Tabellenspalte mit der ID {{key}}",
     "FILTER_YES": "Ja",
     "FILTER_NO": "Nein"
diff --git a/libs/portal-integration-angular/assets/i18n/en.json b/libs/portal-integration-angular/assets/i18n/en.json
index 62dd636b..da9357c2 100644
--- a/libs/portal-integration-angular/assets/i18n/en.json
+++ b/libs/portal-integration-angular/assets/i18n/en.json
@@ -94,6 +94,7 @@
       "ARIA_LABEL": "Toggle {{column}} sorting direction to {{direction}}"
     },
     "SELECT_ALL_ARIA_LABEL": "Select all table rows",
+    "SELECT_ALL_TOOLTIP": "Select all",
     "SELECT_ARIA_LABEL": "Select table row with id {{key}}",
     "FILTER_YES": "Yes",
     "FILTER_NO": "No"