diff --git a/src/libs/request.liq b/src/libs/request.liq
index f6bfb39d5d..77f58192d0 100644
--- a/src/libs/request.liq
+++ b/src/libs/request.liq
@@ -305,9 +305,11 @@ def request.single(
   if
     not fallible and not infallible
   then
-    error.raise(
-      error.invalid,
-      "Source was marked a infallible but its request is not a static file."
+    log.severe(
+      label=id,
+      "Source was marked a infallible but its request is not a static file. The \
+       source is considered fallible for backward compatibility but this will \
+       fail in future versions!"
     )
   end