diff --git a/NEWS b/NEWS
index faf5285df6e..65856c647d6 100644
--- a/NEWS
+++ b/NEWS
@@ -43,6 +43,10 @@ PHP                                                                        NEWS
 - PDO_Firebird:
   . Implemented FR #72583 (All data are fetched as strings). (Dorin Marcoci)
 
+- PDO_PgSQL:
+  . Fixed bug #73959 (lastInsertId fails to throw an exception for wrong 
+    sequence name). (andrewnester)
+
 - Phar:
   . Fixed bug #70417 (PharData::compress() doesn't close temp file). (cmb)
 
diff --git a/ext/pdo_pgsql/pgsql_driver.c b/ext/pdo_pgsql/pgsql_driver.c
index 045d32e7e51..52a9b8f285e 100644
--- a/ext/pdo_pgsql/pgsql_driver.c
+++ b/ext/pdo_pgsql/pgsql_driver.c
@@ -379,7 +379,6 @@ static char *pdo_pgsql_last_insert_id(pdo_dbh_t *dbh, const char *name, size_t *
 		*len = PQgetlength(res, 0, 0);
 	} else {
 		pdo_pgsql_error(dbh, status, pdo_pgsql_sqlstate(res));
-		*len = spprintf(&id, 0, ZEND_LONG_FMT, (zend_long) H->pgoid);
 	}
 
 	if (res) {
diff --git a/ext/pdo_pgsql/tests/bug73959.phpt b/ext/pdo_pgsql/tests/bug73959.phpt
new file mode 100644
index 00000000000..c04b4acd52c
--- /dev/null
+++ b/ext/pdo_pgsql/tests/bug73959.phpt
@@ -0,0 +1,27 @@
+--TEST--
+Bug #73959 (lastInsertId fails to throw an exception)
+--SKIPIF--
+<?php
+if (!extension_loaded('pdo') || !extension_loaded('pdo_pgsql')) die('skip not loaded');
+require dirname(__FILE__) . '/../../../ext/pdo/tests/pdo_test.inc';
+require dirname(__FILE__) . '/config.inc';
+PDOTest::skip();
+?>
+--FILE--
+<?php
+require dirname(__FILE__) . '/../../../ext/pdo/tests/pdo_test.inc';
+require dirname(__FILE__) . '/config.inc';
+$db = PDOTest::test_factory(dirname(__FILE__) . '/common.phpt');
+$db->setAttribute(PDO::ATTR_PERSISTENT, false);
+$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+$db->setAttribute(PDO::PGSQL_ATTR_DISABLE_PREPARES, true);
+
+try {
+    $db->lastInsertId('nonexistent_seq');
+    echo "Error: No exception thrown";
+} catch (PDOException $e) {
+    echo "Success: Exception thrown";
+}
+?>
+--EXPECT--
+Success: Exception thrown