diff --git a/lib/widgets/chat/chat_input.dart b/lib/widgets/chat/chat_input.dart
index 53ae9f32..d951cf00 100644
--- a/lib/widgets/chat/chat_input.dart
+++ b/lib/widgets/chat/chat_input.dart
@@ -550,11 +550,13 @@ class ChatInput extends HookConsumerWidget {
                         final triggerIndex =
                             atIndex > colonIndex ? atIndex : colonIndex;
                         if (triggerIndex == -1) return [];
+                        final chopped = pattern.substring(triggerIndex);
+                        if (chopped.contains(' ')) return [];
                         final service = ref.read(autocompleteServiceProvider);
                         try {
                           return await service.getSuggestions(
                             chatRoom.id,
-                            pattern,
+                            chopped,
                           );
                         } catch (e) {
                           return [];
@@ -645,7 +647,7 @@ class ChatInput extends HookConsumerWidget {
                       direction: VerticalDirection.up,
                       hideOnEmpty: true,
                       hideOnLoading: true,
-                      debounceDuration: const Duration(milliseconds: 500),
+                      debounceDuration: const Duration(milliseconds: 1000),
                     ),
                   ),
                   IconButton(
diff --git a/lib/widgets/post/compose_form_fields.dart b/lib/widgets/post/compose_form_fields.dart
index ccf11b94..2ccbaa45 100644
--- a/lib/widgets/post/compose_form_fields.dart
+++ b/lib/widgets/post/compose_form_fields.dart
@@ -149,9 +149,11 @@ class ComposeFormFields extends HookConsumerWidget {
                   final triggerIndex =
                       atIndex > colonIndex ? atIndex : colonIndex;
                   if (triggerIndex == -1) return [];
+                  final chopped = pattern.substring(triggerIndex);
+                  if (chopped.contains(' ')) return [];
                   final service = ref.read(autocompleteServiceProvider);
                   try {
-                    return await service.getGeneralSuggestions(pattern);
+                    return await service.getGeneralSuggestions(chopped);
                   } catch (e) {
                     return [];
                   }
@@ -235,7 +237,7 @@ class ComposeFormFields extends HookConsumerWidget {
                 direction: VerticalDirection.down,
                 hideOnEmpty: true,
                 hideOnLoading: true,
-                debounceDuration: const Duration(milliseconds: 500),
+                debounceDuration: const Duration(milliseconds: 1000),
               ),
             ],
           ),