diff --git a/app/soapbox/components/modal_root.js b/app/soapbox/components/modal_root.js
index 1c4c53224..5acedae29 100644
--- a/app/soapbox/components/modal_root.js
+++ b/app/soapbox/components/modal_root.js
@@ -27,6 +27,7 @@ const checkComposeContent = compose => {
 
 const mapStateToProps = state => ({
   hasComposeContent: checkComposeContent(state.get('compose')),
+  isEditing: state.compose.get('id') !== null,
 });
 
 const mapDispatchToProps = (dispatch) => ({
@@ -53,6 +54,7 @@ class ModalRoot extends React.PureComponent {
     onCancelReplyCompose: PropTypes.func.isRequired,
     intl: PropTypes.object.isRequired,
     hasComposeContent: PropTypes.bool,
+    isEditing: PropTypes.bool,
     type: PropTypes.string,
     onCancel: PropTypes.func,
     history: PropTypes.object,
@@ -72,13 +74,13 @@ class ModalRoot extends React.PureComponent {
   }
 
   handleOnClose = () => {
-    const { onOpenModal, onCloseModal, hasComposeContent, intl, type, onCancelReplyCompose } = this.props;
+    const { onOpenModal, onCloseModal, hasComposeContent, isEditing, intl, type, onCancelReplyCompose } = this.props;
 
     if (hasComposeContent && type === 'COMPOSE') {
       onOpenModal('CONFIRM', {
         icon: require('@tabler/icons/icons/trash.svg'),
-        heading: <FormattedMessage id='confirmations.delete.heading' defaultMessage='Delete post' />,
-        message: <FormattedMessage id='confirmations.delete.message' defaultMessage='Are you sure you want to delete this post?' />,
+        heading: isEditing ? <FormattedMessage id='confirmations.cancel_editing.heading' defaultMessage='Cancel post editing' /> : <FormattedMessage id='confirmations.delete.heading' defaultMessage='Delete post' />,
+        message: isEditing ? <FormattedMessage id='confirmations.cancel_editing.message' defaultMessage='Are you sure you want to cancel editing this post? All changes will be lost.' /> : <FormattedMessage id='confirmations.delete.message' defaultMessage='Are you sure you want to delete this post?' />,
         confirm: intl.formatMessage(messages.confirm),
         onConfirm: () => onCancelReplyCompose(),
         onCancel: () => onCloseModal('CONFIRM'),
diff --git a/app/soapbox/locales/pl.json b/app/soapbox/locales/pl.json
index ac557b58d..7740949f5 100644
--- a/app/soapbox/locales/pl.json
+++ b/app/soapbox/locales/pl.json
@@ -325,6 +325,8 @@
   "confirmations.block.confirm": "Zablokuj",
   "confirmations.block.heading": "Zablokuj @{name}",
   "confirmations.block.message": "Czy na pewno chcesz zablokować {name}?",
+  "confirmations.cancel_editing.heading": "Anuluj edycję wpisu",
+  "confirmations.cancel_editing.message": "Czy na pewno chcesz anulować edytowanie wpisu? Niezapisane zmiany zostaną utracone.",
   "confirmations.delete.confirm": "Usuń",
   "confirmations.delete.heading": "Usuń wpis",
   "confirmations.delete.message": "Czy na pewno chcesz usunąć ten wpis?",