1 files changed, 6 insertions, 0 deletions
diff --git a/src/photos/WebPSupport.vala b/src/photos/WebPSupport.vala
index 2f4723c..b467b24 100644
--- a/src/photos/WebPSupport.vala
+++ b/src/photos/WebPSupport.vala
@@ -183,7 +183,13 @@ private class WebpSniffer : PhotoFileSniffer {
         if (calc_md5)
             detected.md5 = md5_checksum.get_string();
 
+        // We have never reached the header parsing state, but also didn't encounter any error
+        if (detected.file_format != PhotoFileFormat.WEBP) {
+            return null;
+        }
+        
         return detected;
+
     }
 }