diff --git a/doc/developer/Makefile b/doc/developer/Makefile
index ab52d0e4172a463551bc077c473c1306fb0e39bc..4ce9e948e29de1c21f184f401c6168901f8de54d 100644
--- a/doc/developer/Makefile
+++ b/doc/developer/Makefile
@@ -49,7 +49,7 @@ else
 		-load-script ./examples/acsl_extension \
 		-load-script ./hello_world/hello_world.ml \
        | tee check.log
-	if grep -e "user error" check.log; then \
+	if grep -e "User Error" check.log; then \
            echo "Examples script do not compile with current Frama-C."; \
            echo "Please examine check.log and make appropriate changes"; \
            exit 1; \
diff --git a/doc/developer/examples/acsl_extension.ml b/doc/developer/examples/acsl_extension.ml
index b4848615dd58d2c19e6d4e1bb5d098f0a820d044..9c677e002004f551f2cbfe95d296cdc3caa23997 100644
--- a/doc/developer/examples/acsl_extension.ml
+++ b/doc/developer/examples/acsl_extension.ml
@@ -14,4 +14,4 @@ let type_foo ~typing_context ~loc:_loc l =
   in
   Ext_terms res
 
-let () = Logic_typing.register_behavior_extension "foo" type_foo
+let () = Logic_typing.register_behavior_extension "foo" false type_foo