diff --git a/src/qml/Dialog/ConfirmEncryptionDialog.qml b/src/qml/Dialog/ConfirmEncryptionDialog.qml
new file mode 100644
index 000000000..465e6ccaa
--- /dev/null
+++ b/src/qml/Dialog/ConfirmEncryptionDialog.qml
@@ -0,0 +1,44 @@
+// SPDX-FileCopyrightText: 2022 Carl Schwan <carl@carlschwan.eu>
+// SPDX-FileCopyrightText: 2022 Tobias Fella <fella@posteo.de>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+import QtQuick 2.15
+import QtQuick.Controls 2.15 as QQC2
+import QtQuick.Layouts 1.15
+import org.kde.kirigami 2.15 as Kirigami
+
+QQC2.Dialog {
+    id: confirmEncryptionDialog
+
+    property var room
+
+    ColumnLayout {
+        Kirigami.Heading {
+            text: i18n("Activate Encryption")
+        }
+        QQC2.Label {
+            text: i18n("It will not be possible to deactivate the encryption after it is enabled.")
+        }
+    }
+
+    x: Math.round((parent.width - width) / 2)
+    y: Math.round((parent.height - height) / 2)
+    modal: true
+
+    footer: QQC2.DialogButtonBox {
+        QQC2.Button {
+            text: i18n("Cancel")
+            QQC2.DialogButtonBox.buttonRole: QQC2.DialogButtonBox.RejectRole
+            onClicked: confirmEncryptionDialog.close()
+        }
+
+        QQC2.Button {
+            text: i18n("Activate Encryption")
+            QQC2.DialogButtonBox.buttonRole: QQC2.DialogButtonBox.AcceptRole
+            onClicked: {
+                confirmEncryptionDialog.room.activateEncryption()
+                confirmEncryptionDialog.close();
+            }
+        }
+    }
+}
diff --git a/src/qml/Panel/RoomDrawer.qml b/src/qml/Panel/RoomDrawer.qml
index d2bb7bd0a..415d1e5ad 100644
--- a/src/qml/Panel/RoomDrawer.qml
+++ b/src/qml/Panel/RoomDrawer.qml
@@ -154,7 +154,11 @@ Kirigami.OverlayDrawer {
                         text: i18n("Enable encryption")
                         display: QQC2.AbstractButton.IconOnly
 
-                        onClicked: roomDrawer.room.activateEncryption()
+                        onClicked: {
+                            let dialog = confirmEncryptionDialog.createObject(applicationWindow(), {room: roomDrawer.room});
+                            roomDrawer.close();
+                            dialog.open();
+                        }
 
                         QQC2.ToolTip {
                             text: encryptButton.text
@@ -357,4 +361,10 @@ Kirigami.OverlayDrawer {
 
         UserDetailDialog {}
     }
+
+    Component {
+        id: confirmEncryptionDialog
+
+        ConfirmEncryptionDialog {}
+    }
 }
diff --git a/src/res.qrc b/src/res.qrc
index 596e6618a..42ffa9737 100644
--- a/src/res.qrc
+++ b/src/res.qrc
@@ -90,5 +90,6 @@
         <file alias="SonnetConfigPage.qml">qml/Settings/SonnetConfigPage.qml</file>
         <file alias="NetworkProxyPage.qml">qml/Settings/NetworkProxyPage.qml</file>
         <file alias="DevtoolsPage.qml">qml/Page/DevtoolsPage.qml</file>
+        <file alias="ConfirmEncryptionDialog.qml">qml/Dialog/ConfirmEncryptionDialog.qml</file>
     </qresource>
 </RCC>