diff --git a/commands.py b/commands.py
index 08ed3c0..c757a93 100644
--- a/commands.py
+++ b/commands.py
@@ -120,7 +120,7 @@ async def info_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> No
                     "Date:",
                     HtmlFormat.hyperlink(
                         created_at.strftime("%Y-%m-%d %X (%z)"),
-                        f"{config.app.protocol}://{config.app.hostname}/posts?tags=date:{created_at.strftime("%Y-%m-%d")}",
+                        f"{config.app.protocol}://{config.app.hostname}/posts?tags=date:{created_at.strftime('%Y-%m-%d')}",
                     ),
                 ]
             )
@@ -295,7 +295,7 @@ async def user_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> No
                         vote_post_count,
                         f"{config.app.protocol}://{config.app.hostname}/post_votes?search[user_name]={user_data['name']}",
                     ),
-                    f"({' '.join([
+                    f"""({' '.join([
                         HtmlFormat.hyperlink(
                             f"up:{upvote_post_count}",
                             f"{config.app.protocol}://{config.app.hostname}/post_votes?search[user_name]={user_data['name']}&search[score]=1",
@@ -304,7 +304,7 @@ async def user_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> No
                             f"down:{downvote_post_count}",
                             f"{config.app.protocol}://{config.app.hostname}/post_votes?search[user_name]={user_data['name']}&search[score]=-1",
                         ),
-                    ])})",
+                    ])})""",
                 ]
             )
         )
@@ -438,7 +438,7 @@ async def user_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> No
                         total_feedback_count,
                         f"{config.app.protocol}://{config.app.hostname}/user_feedbacks?search[user_name]={user_data['name']}",
                     ),
-                    f"({' '.join([
+                    f"""({' '.join([
                         HtmlFormat.hyperlink(
                             f"positive:{user_data['positive_feedback_count']}",
                             f"{config.app.protocol}://{config.app.hostname}/user_feedbacks?search[user_name]={user_data['name']}&search[category]=positive",
@@ -451,7 +451,7 @@ async def user_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> No
                             f"negative:{user_data['negative_feedback_count']}",
                             f"{config.app.protocol}://{config.app.hostname}/user_feedbacks?search[user_name]={user_data['name']}&search[category]=negative",
                         ),
-                    ])})"
+                    ])})"""
                 ]
             )
         )
diff --git a/config.py b/config.py
index 4c5d2f1..b165558 100644
--- a/config.py
+++ b/config.py
@@ -11,7 +11,7 @@ _c.optionxform = str
 
 
 def init_config() -> None:
-    if _validate_config() is False:
+    if not _validate_config():
         print("Config is invalid.")
         exit(1)
     _c.read("config.ini", "utf-8")
@@ -58,7 +58,7 @@ def _validate_config() -> bool:
 
     try:
         response = requests.get(
-            f"http://{_c.get("App", "Host")}/status.json", timeout=10
+            f"http://{_c.get('App', 'Host')}/status.json", timeout=10
         )
         if response.status_code != 200:
             raise requests.exceptions.InvalidURL