diff --git a/backend/src/middleware/validation/index.js b/backend/src/middleware/validation/index.js
deleted file mode 100644
index 8fba13529..000000000
--- a/backend/src/middleware/validation/index.js
+++ /dev/null
@@ -1,29 +0,0 @@
-import { UserInputError } from 'apollo-server'
-
-const validateUrl = async (resolve, root, args, context, info) => {
-  const { url } = args
-  const isValid = url.match(/^(?:https?:\/\/)(?:[^@\n])?(?:www\.)?([^:/\n?]+)/g)
-  if (isValid) {
-    /* eslint-disable-next-line no-return-await */
-    return await resolve(root, args, context, info)
-  } else {
-    throw new UserInputError('Input is not a URL')
-  }
-}
-
-const validateUpdateComment = async (resolve, root, args, context, info) => {
-  const COMMENT_MIN_LENGTH = 1
-  const content = args.content.replace(/<(?:.|\n)*?>/gm, '').trim()
-  if (!args.content || content.length < COMMENT_MIN_LENGTH) {
-    throw new UserInputError(`Comment must be at least ${COMMENT_MIN_LENGTH} character long!`)
-  }
-
-  return resolve(root, args, context, info)
-}
-
-export default {
-  Mutation: {
-    CreateSocialMedia: validateUrl,
-    UpdateComment: validateUpdateComment,
-  },
-}
diff --git a/backend/src/middleware/validation/validationMiddleware.js b/backend/src/middleware/validation/validationMiddleware.js
index 77282b6b5..319a9a6c0 100644
--- a/backend/src/middleware/validation/validationMiddleware.js
+++ b/backend/src/middleware/validation/validationMiddleware.js
@@ -45,9 +45,20 @@ const validateCommentCreation = async (resolve, root, args, context, info) => {
   }
 }
 
+const validateUpdateComment = async (resolve, root, args, context, info) => {
+  const COMMENT_MIN_LENGTH = 1
+  const content = args.content.replace(/<(?:.|\n)*?>/gm, '').trim()
+  if (!args.content || content.length < COMMENT_MIN_LENGTH) {
+    throw new UserInputError(`Comment must be at least ${COMMENT_MIN_LENGTH} character long!`)
+  }
+
+  return resolve(root, args, context, info)
+}
+
 export default {
   Mutation: {
     CreateSocialMedia: validate(socialMediaSchema),
     CreateComment: validateCommentCreation,
+    UpdateComment: validateUpdateComment,
   },
 }
diff --git a/backend/src/schema/resolvers/comments.spec.js b/backend/src/schema/resolvers/comments.spec.js
index 88cdbe37a..8ed062728 100644
--- a/backend/src/schema/resolvers/comments.spec.js
+++ b/backend/src/schema/resolvers/comments.spec.js
@@ -267,6 +267,50 @@ describe('ManageComments', () => {
           client.request(updateCommentMutation, updateCommentVariables),
         ).resolves.toEqual(expected)
       })
+
+      it('throw an error if an empty string is sent from the editor as content', async () => {
+        updateCommentVariables = {
+          id: 'c456',
+          content: '<p></p>',
+        }
+
+        await expect(client.request(updateCommentMutation, updateCommentVariables)).rejects.toThrow(
+          'Comment must be at least 1 character long!',
+        )
+      })
+
+      it('throws an error if a comment sent from the editor does not contain a single character', async () => {
+        updateCommentVariables = {
+          id: 'c456',
+          content: '<p></p>',
+        }
+
+        await expect(client.request(updateCommentMutation, updateCommentVariables)).rejects.toThrow(
+          'Comment must be at least 1 character long!',
+        )
+      })
+
+      it('throws an error if postId is sent as an empty string', async () => {
+        updateCommentVariables = {
+          id: 'c456',
+          content: '<p></p>',
+        }
+
+        await expect(client.request(updateCommentMutation, updateCommentVariables)).rejects.toThrow(
+          'Comment must be at least 1 character long!',
+        )
+      })
+
+      it('throws an error if content is sent as an string of empty characters', async () => {
+        updateCommentVariables = {
+          id: 'c456',
+          content: '<p></p>',
+        }
+
+        await expect(client.request(updateCommentMutation, updateCommentVariables)).rejects.toThrow(
+          'Comment must be at least 1 character long!',
+        )
+      })
     })
   })