diff --git a/uriloader/exthandler/android/nsMIMEInfoAndroid.cpp b/uriloader/exthandler/android/nsMIMEInfoAndroid.cpp
index 9a56a4b4f544..8049cad9077d 100644
--- a/uriloader/exthandler/android/nsMIMEInfoAndroid.cpp
+++ b/uriloader/exthandler/android/nsMIMEInfoAndroid.cpp
@@ -306,7 +306,6 @@ nsMIMEInfoAndroid::GetPrimaryExtension(nsACString & aPrimaryExtension)
 NS_IMETHODIMP
 nsMIMEInfoAndroid::SetPrimaryExtension(const nsACString & aExtension)
 {
-  NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
   uint32_t extCount = mExtensions.Length();
   uint8_t i;
   bool found = false;