diff --git a/files/helpers/images.py b/files/helpers/images.py
index b743896d6..a062cda54 100644
--- a/files/helpers/images.py
+++ b/files/helpers/images.py
@@ -40,7 +40,7 @@ def upload_file(file=None, resize=False, png=False):
 			req = requests.post('https://api.imgur.com/3/upload.json', headers = {"Authorization": f"Client-ID {IMGUR_KEY}"}, data=data)
 		resp = req.json()['data']
 		url = resp['link']
-		if not "_d" in url:
+		if not "_d." in url:
 			url = url.replace(".png", "_d.png").replace(".jpg", "_d.jpg").replace(".jpeg", "_d.jpeg")
 			if "_d." in url: url += "?maxwidth=9999"
 	except: return
diff --git a/files/routes/posts.py b/files/routes/posts.py
index fab9533fb..91abf6166 100644
--- a/files/routes/posts.py
+++ b/files/routes/posts.py
@@ -520,7 +520,7 @@ def submit_post(v):
 		if url.startswith("https://streamable.com/") and not url.startswith("https://streamable.com/e/"):
 			url = url.replace("https://streamable.com/", "https://streamable.com/e/")
 
-		if "i.imgur.com" in url and "_d" not in url:
+		if "i.imgur.com" in url and "_d." not in url:
 			url = url.replace(".png", "_d.png").replace(".jpg", "_d.jpg").replace(".jpeg", "_d.jpeg")
 			if "_d." in url: url += "?maxwidth=9999"