diff --git a/src/plugins/value/domains/cvalue/cvalue_domain.ml b/src/plugins/value/domains/cvalue/cvalue_domain.ml
index 57dd8ab350c1bc6586f6a7e13e6e336afdadb003..cd9f4376d4ef60a4c288d294eb3bca0ec1345b88 100644
--- a/src/plugins/value/domains/cvalue/cvalue_domain.ml
+++ b/src/plugins/value/domains/cvalue/cvalue_domain.ml
@@ -563,7 +563,9 @@ module State = struct
     Value_parameters.result "%t" Value_perf.display
 
   let post_analysis _state =
-    if Value_parameters.ForceValues.get () && Value_parameters.verbose_atleast 1
+    if Value_parameters.ForceValues.get ()
+    && Value_parameters.verbose_atleast 1
+    && Plugin.is_present "inout"
     then Value_parameters.ForceValues.output display_results
 end
 
diff --git a/src/plugins/value/engine/compute_functions.ml b/src/plugins/value/engine/compute_functions.ml
index e294447de6682233ba5f0af253b3df0c0c345341..89f505305e48128fbed9ca567db7db6b36124c7b 100644
--- a/src/plugins/value/engine/compute_functions.ml
+++ b/src/plugins/value/engine/compute_functions.ml
@@ -54,6 +54,12 @@ let options_ok () =
   Value_parameters.BuiltinsOverrides.iter (fun (kf, _) -> check_assigns kf);
   Value_parameters.UsePrototype.iter (fun kf -> check_assigns kf)
 
+let plugins_ok () =
+  if not (Plugin.is_present "inout") then
+    Value_parameters.warning
+      "The inout plugin is missing: some features are disabled, \
+       and the analysis may have degraded precision and performance."
+
 (* Do something tasteless in case the user did not put a spec on functions
    for which he set [-eva-use-spec]:  generate an incorrect one ourselves *)
 let generate_specs () =
@@ -73,6 +79,7 @@ let generate_specs () =
 let pre_analysis () =
   floats_ok ();
   options_ok ();
+  plugins_ok ();
   Split_return.pretty_strategies ();
   generate_specs ();
   Widen.precompute_widen_hints ();
diff --git a/tests/value/oracle/unknown_sizeof.0.res.oracle b/tests/value/oracle/unknown_sizeof.0.res.oracle
index b106b41c0ed6f8b83419377598478fedd74bcbfe..4244ff0a82bf4d678680de7005b49eb33ba7e264 100644
--- a/tests/value/oracle/unknown_sizeof.0.res.oracle
+++ b/tests/value/oracle/unknown_sizeof.0.res.oracle
@@ -1,4 +1,5 @@
 [kernel] Parsing unknown_sizeof.i (no preprocessing)
+[eva] Warning: The inout plugin is missing: some features are disabled, and the analysis may have degraded precision and performance.
 [eva] Analyzing a complete application starting at main1
 [eva] Computing initial state
 [eva:unknown-size] unknown_sizeof.i:8: Warning: 
diff --git a/tests/value/oracle/unknown_sizeof.1.res.oracle b/tests/value/oracle/unknown_sizeof.1.res.oracle
index 52d022abfce0070deb7ef6ef3f21e519c7411d0a..fd9e82d2f78f1e71419051cac7ceafad4710390f 100644
--- a/tests/value/oracle/unknown_sizeof.1.res.oracle
+++ b/tests/value/oracle/unknown_sizeof.1.res.oracle
@@ -1,4 +1,5 @@
 [kernel] Parsing unknown_sizeof.i (no preprocessing)
+[eva] Warning: The inout plugin is missing: some features are disabled, and the analysis may have degraded precision and performance.
 [eva] Analyzing a complete application starting at main2
 [eva] Computing initial state
 [eva:unknown-size] unknown_sizeof.i:8: Warning: