diff --git a/changelog.d/8865.bugfix b/changelog.d/8865.bugfix
new file mode 100644
index 00000000000..7c32637de95
--- /dev/null
+++ b/changelog.d/8865.bugfix
@@ -0,0 +1 @@
+Add a confirmation dialog of reporting the user.
diff --git a/changelog.d/8904.bugfix b/changelog.d/8904.bugfix
deleted file mode 100644
index a584da69020..00000000000
--- a/changelog.d/8904.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Intercept mobile.element.io links with Element app
diff --git a/library/ui-strings/src/main/res/values/strings.xml b/library/ui-strings/src/main/res/values/strings.xml
index 30e6ef673ed..27e55278550 100644
--- a/library/ui-strings/src/main/res/values/strings.xml
+++ b/library/ui-strings/src/main/res/values/strings.xml
@@ -707,6 +707,11 @@
     <string name="room_participants_action_unignore_prompt_msg">Unignoring this user will show all messages from them again.</string>
     <string name="room_participants_action_unignore">Unignore</string>
 
+    <string name="room_participants_action_report_title">Report user</string>
+    <string name="room_participants_action_report_prompt_msg">Reporting this user will report this user to the server administrators and room moderators.</string>
+    <string name="room_participants_action_report">Report</string>
+    <string name="room_participants_action_report_reason">Reporting user %1$s</string>
+
     <string name="room_participants_action_cancel_invite_title">Cancel invite</string>
     <string name="room_participants_action_cancel_invite_prompt_msg">Are you sure you want to cancel the invite for this user?</string>
     <string name="room_participants_remove_title">Remove user</string>
diff --git a/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt b/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt
index 5806b000e5c..cf857064c02 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/TimelineFragment.kt
@@ -1877,11 +1877,7 @@ class TimelineFragment :
                 action.senderId?.let { askConfirmationToIgnoreUser(it) }
             }
             is EventSharedAction.ReportUser -> {
-                timelineViewModel.handle(
-                        RoomDetailAction.ReportContent(
-                                action.eventId, action.senderId, "Reporting user ${action.senderId}", user = true
-                        )
-                )
+                askConfirmationToReportUser(action.eventId, action.senderId)
             }
             is EventSharedAction.OnUrlClicked -> {
                 onUrlClicked(action.url, action.title)
@@ -1931,6 +1927,19 @@ class TimelineFragment :
                 .show()
     }
 
+    private fun askConfirmationToReportUser(eventId: String, senderId: String?) {
+        MaterialAlertDialogBuilder(requireContext(), im.vector.lib.ui.styles.R.style.ThemeOverlay_Vector_MaterialAlertDialog_Destructive)
+                .setTitle(CommonStrings.room_participants_action_report_title)
+                .setMessage(CommonStrings.room_participants_action_report_prompt_msg)
+                .setNegativeButton(CommonStrings.action_cancel, null)
+                .setPositiveButton(CommonStrings.room_participants_action_report) { _, _ ->
+                    timelineViewModel.handle(RoomDetailAction.ReportContent(
+                            eventId, senderId, getString(CommonStrings.room_participants_action_report_reason, senderId ), user = true
+                    ))
+                }
+                .show()
+    }
+
     private fun showSnackWithMessage(message: String) {
         view?.showOptimizedSnackbar(message)
     }
diff --git a/vector/src/main/java/im/vector/app/features/roommemberprofile/RoomMemberProfileFragment.kt b/vector/src/main/java/im/vector/app/features/roommemberprofile/RoomMemberProfileFragment.kt
index 69f499a307d..05ede4692cd 100644
--- a/vector/src/main/java/im/vector/app/features/roommemberprofile/RoomMemberProfileFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/roommemberprofile/RoomMemberProfileFragment.kt
@@ -302,7 +302,17 @@ class RoomMemberProfileFragment :
     }
 
     override fun onReportClicked() {
-        viewModel.handle(RoomMemberProfileAction.ReportUser)
+        ConfirmationDialogBuilder
+                .show(
+                        activity = requireActivity(),
+                        askForReason = false,
+                        confirmationRes = CommonStrings.room_participants_action_report_prompt_msg,
+                        positiveRes = CommonStrings.room_participants_action_report,
+                        reasonHintRes = 0,
+                        titleRes = CommonStrings.room_participants_action_report_title
+                ) {
+                    viewModel.handle(RoomMemberProfileAction.ReportUser)
+                }
     }
 
     override fun onTapVerify() {