diff --git a/FU.API/FU.API/Services/PostService.cs b/FU.API/FU.API/Services/PostService.cs
index 7da21c1b..0aaa871d 100644
--- a/FU.API/FU.API/Services/PostService.cs
+++ b/FU.API/FU.API/Services/PostService.cs
@@ -76,6 +76,8 @@ public async Task<Post> UpdatePost(Post postChanges)
             throw new PostException("The updated post's creator does not match the old post's creator", HttpStatusCode.UnprocessableEntity);
         }
 
+        AssertValidDateAndTime(postChanges);
+
         ogPost.Game = await _dbContext.Games.FindAsync(postChanges.GameId) ?? throw new NonexistentGameException();
         ogPost.Description = postChanges.Description;
         ogPost.MaxPlayers = postChanges.MaxPlayers;