diff --git a/includes/AJAXPoll.class.php b/includes/AJAXPoll.class.php
index db2241c..2c13c02 100644
--- a/includes/AJAXPoll.class.php
+++ b/includes/AJAXPoll.class.php
@@ -597,6 +597,9 @@ During the last 48 hours, $tab2[0] votes have been given.";
 		$db = $updater->getDB();
 
 		$patchPath = __DIR__ . '/../sql/';
+		if ( $db->getType() == 'postgres' ) {
+			$patchPath .= 'postgres/';
+		}
 
 		if ( $db->tableExists( 'poll_info' ) ) {
 			# poll_info.poll_title field was dropped in AJAXPoll version 1.72
diff --git a/sql/postgres/create-table--ajaxpoll_info.sql b/sql/postgres/create-table--ajaxpoll_info.sql
new file mode 100644
index 0000000..678d684
--- /dev/null
+++ b/sql/postgres/create-table--ajaxpoll_info.sql
@@ -0,0 +1,6 @@
+CREATE TABLE IF NOT EXISTS ajaxpoll_info (
+  poll_id TEXT NOT NULL PRIMARY KEY default '',
+  poll_txt TEXT,
+  poll_show_results_before_voting SMALLINT,
+  poll_date TIMESTAMPTZ default NULL
+);
diff --git a/sql/postgres/create-table--ajaxpoll_vote.sql b/sql/postgres/create-table--ajaxpoll_vote.sql
new file mode 100644
index 0000000..322137d
--- /dev/null
+++ b/sql/postgres/create-table--ajaxpoll_vote.sql
@@ -0,0 +1,15 @@
+DROP SEQUENCE IF EXISTS ajaxpoll_vote_poll_vote_id_seq CASCADE;
+CREATE SEQUENCE ajaxpoll_vote_poll_vote_id_seq;
+
+CREATE TABLE IF NOT EXISTS ajaxpoll_vote (
+  poll_vote_id INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('ajaxpoll_vote_poll_vote_id_seq'),
+  poll_id TEXT NOT NULL default '',
+  poll_actor INTEGER NOT NULL,
+  poll_ip TEXT default NULL,
+  poll_answer SMALLINT default NULL,
+  poll_date TIMESTAMPTZ default NULL
+);
+
+ALTER SEQUENCE ajaxpoll_vote_poll_vote_id_seq OWNED BY ajaxpoll_vote.poll_vote_id;
+
+CREATE UNIQUE INDEX poll_id_actor ON ajaxpoll_vote (poll_id, poll_actor);