diff --git a/src/ert/config/parsing/config_schema_deprecations.py b/src/ert/config/parsing/config_schema_deprecations.py
index d42b612f563..33a0ece4859 100644
--- a/src/ert/config/parsing/config_schema_deprecations.py
+++ b/src/ert/config/parsing/config_schema_deprecations.py
@@ -1,4 +1,5 @@
 from functools import partial
+from typing import List, cast
 
 from .deprecation_info import DeprecationInfo
 
@@ -222,4 +223,11 @@
         "the future. Use REALIZATION_MEMORY instead.",
         check=lambda line: "MEMORY_PER_CPU" in line,
     ),
+    DeprecationInfo(
+        keyword="QUEUE_OPTION",
+        message="Memory requirements in LSF should now be set using REALIZATION_MEMORY and not"
+        " through the LSF_RESOURCE option.",
+        check=lambda line: "LSF_RESOURCE" in line
+        and "mem=" in cast(List[str], line)[-1],
+    ),
 ]