diff --git a/src/backend/core/api/viewsets.py b/src/backend/core/api/viewsets.py
index b3a923438..72326c030 100644
--- a/src/backend/core/api/viewsets.py
+++ b/src/backend/core/api/viewsets.py
@@ -3234,9 +3234,11 @@ class CommentViewSet(
     permission_classes = [permissions.CommentPermission]
     pagination_class = Pagination
     serializer_class = serializers.CommentSerializer
-    queryset = models.Comment.objects.select_related("user").prefetch_related(
-        "reactions__users"
-    ).all()
+    queryset = (
+        models.Comment.objects.select_related("user")
+        .prefetch_related("reactions__users")
+        .all()
+    )
 
     def get_queryset(self):
         """Override to filter on related resource."""
diff --git a/src/frontend/apps/impress/src/core/config/api/useConfig.tsx b/src/frontend/apps/impress/src/core/config/api/useConfig.tsx
index 2cda2fa51..58e4d8c7e 100644
--- a/src/frontend/apps/impress/src/core/config/api/useConfig.tsx
+++ b/src/frontend/apps/impress/src/core/config/api/useConfig.tsx
@@ -60,6 +60,7 @@ export interface ConfigResponse {
   POSTHOG_HOST?: PostHogConf['host'];
   RELEASE_VERSION: string;
   SENTRY_DSN?: string;
+  REACTIONS_MAX_PER_COMMENT: number;
   TRASHBIN_CUTOFF_DAYS?: number;
   theme_customization?: ThemeCustomization;
 }
diff --git a/src/frontend/apps/impress/src/features/docs/doc-comments/api/DocsThreadStoreAuth.tsx b/src/frontend/apps/impress/src/features/docs/doc-comments/api/DocsThreadStoreAuth.tsx
index 1d5f8eca9..1c8c17d80 100644
--- a/src/frontend/apps/impress/src/features/docs/doc-comments/api/DocsThreadStoreAuth.tsx
+++ b/src/frontend/apps/impress/src/features/docs/doc-comments/api/DocsThreadStoreAuth.tsx
@@ -6,6 +6,7 @@ export class DocsThreadStoreAuth extends ThreadStoreAuth {
   constructor(
     private readonly userId: string,
     public canSee: boolean,
+    private readonly maxReactions: number,
   ) {
     super();
   }
@@ -67,13 +68,27 @@ export class DocsThreadStoreAuth extends ThreadStoreAuth {
     }
 
     if (!emoji) {
-      return true;
+      return comment.reactions.length < this.maxReactions;
     }
 
-    return !comment.reactions.some(
+    const hasReactedWithEmoji = comment.reactions.some(
       (reaction) =>
         reaction.emoji === emoji && reaction.userIds.includes(this.userId),
     );
+
+    if (hasReactedWithEmoji) {
+      return false;
+    }
+
+    const reactionExists = comment.reactions.some(
+      (reaction) => reaction.emoji === emoji,
+    );
+
+    if (reactionExists) {
+      return true;
+    }
+
+    return comment.reactions.length < this.maxReactions;
   }
 
   canDeleteReaction(comment: ClientCommentData, emoji?: string): boolean {
diff --git a/src/frontend/apps/impress/src/features/docs/doc-comments/hooks/useComments.ts b/src/frontend/apps/impress/src/features/docs/doc-comments/hooks/useComments.ts
index ff2a4ac9e..1a6502241 100644
--- a/src/frontend/apps/impress/src/features/docs/doc-comments/hooks/useComments.ts
+++ b/src/frontend/apps/impress/src/features/docs/doc-comments/hooks/useComments.ts
@@ -1,6 +1,7 @@
 import { useCallback, useEffect, useMemo } from 'react';
 import { useTranslation } from 'react-i18next';
 
+import { useConfig } from '@/core';
 import { useCunninghamTheme } from '@/cunningham';
 import { User, avatarUrlFromName } from '@/features/auth';
 import { Doc, useProviderStore } from '@/features/docs/doc-management';
@@ -18,6 +19,7 @@ export function useComments(
   const { t } = useTranslation();
   const { themeTokens } = useCunninghamTheme();
   const { setThreadStore } = useThreadStore();
+  const { data: config } = useConfig();
 
   const threadStore = useMemo(() => {
     return new DocsThreadStore(
@@ -26,6 +28,7 @@ export function useComments(
       new DocsThreadStoreAuth(
         encodeURIComponent(user?.full_name || ''),
         canComment,
+        config?.REACTIONS_MAX_PER_COMMENT ?? 0,
       ),
       provider?.document,
     );
@@ -35,6 +38,7 @@ export function useComments(
     provider?.awareness,
     provider?.document,
     user?.full_name,
+    config?.REACTIONS_MAX_PER_COMMENT,
   ]);
 
   useEffect(() => {