diff --git a/changelog.d/1663.feature b/changelog.d/1663.feature
new file mode 100644
index 000000000..7092275bf
--- /dev/null
+++ b/changelog.d/1663.feature
@@ -0,0 +1,2 @@
+- New PM rooms are configured to disable calls, reactions, redactions, and stickers;
+  as they could not be bridged anyway.
diff --git a/spec/integ/pm.spec.js b/spec/integ/pm.spec.js
index 48aff4f46..027ed0259 100644
--- a/spec/integ/pm.spec.js
+++ b/spec/integ/pm.spec.js
@@ -284,7 +284,12 @@ describe("IRC-to-Matrix PMing", () => {
                             "m.room.canonical_alias": 100,
                             "m.room.history_visibility": 100,
                             "m.room.power_levels": 100,
-                            "m.room.encryption": 100
+                            "m.room.encryption": 100,
+                            "m.call.invite": 100,
+                            "m.call.candidate": 100,
+                            "m.reaction": 100,
+                            "m.room.redaction": 100,
+                            "m.sticker": 100,
                         },
                         invite: 100
                     },
diff --git a/src/bridge/IrcHandler.ts b/src/bridge/IrcHandler.ts
index 6e9168e67..439861ef1 100644
--- a/src/bridge/IrcHandler.ts
+++ b/src/bridge/IrcHandler.ts
@@ -195,7 +195,15 @@ export class IrcHandler {
                                     "m.room.canonical_alias": 100,
                                     "m.room.history_visibility": 100,
                                     "m.room.power_levels": 100,
-                                    "m.room.encryption": 100
+                                    "m.room.encryption": 100,
+                                    // Event types that we cannot translate to IRC;
+                                    // we might as well block them with PLs so
+                                    // Matrix clients can hide them from their UI.
+                                    "m.call.invite": 100,
+                                    "m.call.candidate": 100,
+                                    "m.reaction": 100,
+                                    "m.room.redaction": 100,
+                                    "m.sticker": 100,
                                 },
                                 invite: 100,
                             },