diff --git a/src/main/java/org/b3log/symphony/util/Images.java b/src/main/java/org/b3log/symphony/util/Images.java
index b752890f..c2d5f8ad 100644
--- a/src/main/java/org/b3log/symphony/util/Images.java
+++ b/src/main/java/org/b3log/symphony/util/Images.java
@@ -56,7 +56,7 @@ public static String qiniuImgProcessing(final String content) {
                 continue;
             }
 
-            ret = StringUtils.replace(ret, imgSrc, imgSrc + "?imageView2/2/w/768/format/webp/interlace/1");
+            ret = StringUtils.replace(ret, imgSrc + "\"", imgSrc + "?imageView2/2/w/768/format/webp/interlace/1\"");
         }
 
         return ret;