diff --git a/pg_ivm--1.10.sql b/pg_ivm--1.10.sql
index 98f0145..d7e1a27 100644
--- a/pg_ivm--1.10.sql
+++ b/pg_ivm--1.10.sql
@@ -1,3 +1,24 @@
+DO $$
+    DECLARE
+        shared_pl text;
+        session_pl text;
+    BEGIN
+        SELECT setting INTO shared_pl FROM pg_catalog.pg_settings
+        WHERE name = 'shared_preload_libraries';
+
+        SELECT setting INTO session_pl FROM pg_catalog.pg_settings
+        WHERE name = 'session_preload_libraries';
+
+        IF shared_pl !~ '\mpg_ivm\M' AND session_pl !~ '\mpg_ivm\M' THEN
+            RAISE EXCEPTION 'pg_ivm is not loaded in shared_preload_libraries '
+                'or session_preload_libraries'
+            USING HINT = 'Add pg_ivm to session_preload_libraries and '
+                'restart the session. Or, add pg_ivm to '
+                'shared_preload_libraries and restart Postgres.';
+        END IF;
+    END
+$$;
+
 CREATE SCHEMA pgivm;
 
 -- catalog
diff --git a/pg_ivm--1.9--1.10.sql b/pg_ivm--1.9--1.10.sql
index f117add..2f4e678 100644
--- a/pg_ivm--1.9--1.10.sql
+++ b/pg_ivm--1.9--1.10.sql
@@ -1,3 +1,24 @@
+DO $$
+    DECLARE
+        shared_pl text;
+        session_pl text;
+    BEGIN
+        SELECT setting INTO shared_pl FROM pg_catalog.pg_settings
+        WHERE name = 'shared_preload_libraries';
+
+        SELECT setting INTO session_pl FROM pg_catalog.pg_settings
+        WHERE name = 'session_preload_libraries';
+
+        IF shared_pl !~ '\mpg_ivm\M' AND session_pl !~ '\mpg_ivm\M' THEN
+            RAISE EXCEPTION 'pg_ivm is not loaded in shared_preload_libraries '
+                'or session_preload_libraries'
+            USING HINT = 'Add pg_ivm to session_preload_libraries and '
+                'restart the session. Or, add pg_ivm to '
+                'shared_preload_libraries and restart Postgres.';
+        END IF;
+    END
+$$;
+
 -- create a new schema pgivm and change the objects' schema to it
 CREATE SCHEMA pgivm;