diff --git a/assets/l10n/intl_en.arb b/assets/l10n/intl_en.arb
index 83af130c2..3604a2547 100644
--- a/assets/l10n/intl_en.arb
+++ b/assets/l10n/intl_en.arb
@@ -4946,6 +4946,7 @@
   "searchChats": "Search chats",
   "selectChats": "Select chats",
   "selectChatToStart": "Complete! Select a chat to start",
+  "maxFifty": "Max 50",
   "configureSpace": "Configure space",
   "pinMessages": "Pin messages",
   "setJoinRules": "Set join rules",
diff --git a/lib/pangea/activity_generator/activity_generator_view.dart b/lib/pangea/activity_generator/activity_generator_view.dart
index b86c4fe91..b33947e3e 100644
--- a/lib/pangea/activity_generator/activity_generator_view.dart
+++ b/lib/pangea/activity_generator/activity_generator_view.dart
@@ -176,6 +176,9 @@ class ActivityGeneratorView extends StatelessWidget {
                         if (n == null || n <= 0) {
                           return l10n.mustBeInteger;
                         }
+                        if (n > 50) {
+                          return l10n.maxFifty;
+                        }
                         return null;
                       },
                       onChanged: (val) => controller
diff --git a/lib/pangea/activity_suggestions/activity_suggestion_dialog.dart b/lib/pangea/activity_suggestions/activity_suggestion_dialog.dart
index 3a1282b3f..47b9aee4e 100644
--- a/lib/pangea/activity_suggestions/activity_suggestion_dialog.dart
+++ b/lib/pangea/activity_suggestions/activity_suggestion_dialog.dart
@@ -270,6 +270,10 @@ class ActivitySuggestionDialogState extends State<ActivitySuggestionDialog> {
                                                 return L10n.of(context)
                                                     .pleaseEnterInt;
                                               }
+                                              if (val > 50) {
+                                                return L10n.of(context)
+                                                    .maxFifty;
+                                              }
                                             } catch (e) {
                                               return L10n.of(context)
                                                   .pleaseEnterANumber;