diff --git a/xpcom/reflect/xptinfo/xptiInterfaceInfo.cpp b/xpcom/reflect/xptinfo/xptiInterfaceInfo.cpp
index ca7a6855493..c091eddf6e5 100644
--- a/xpcom/reflect/xptinfo/xptiInterfaceInfo.cpp
+++ b/xpcom/reflect/xptinfo/xptiInterfaceInfo.cpp
@@ -362,7 +362,6 @@ xptiInterfaceEntry::GetEntryForParam(uint16_t methodIndex,
     // This can happen if a declared interface is not available at runtime.
     if(!theEntry)
     {
-        NS_WARNING("Declared InterfaceInfo not found");
         *entry = nullptr;
         return NS_ERROR_FAILURE;
     }