diff --git a/ext/pdo_firebird/tests/bug_47415.phpt b/ext/pdo_firebird/tests/bug_47415.phpt
index 4b8c14d8909..640c9d8bd55 100644
--- a/ext/pdo_firebird/tests/bug_47415.phpt
+++ b/ext/pdo_firebird/tests/bug_47415.phpt
@@ -6,6 +6,7 @@ Bug #47415 PDO_Firebird segfaults when passing lowercased column name to bindCol
 <?php
 require 'testdb.inc';
 
+$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
 @$dbh->exec('DROP TABLE testz');
 $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);
 
diff --git a/ext/pdo_firebird/tests/bug_48877.phpt b/ext/pdo_firebird/tests/bug_48877.phpt
index 85da7d42856..ad29ac4c43d 100644
--- a/ext/pdo_firebird/tests/bug_48877.phpt
+++ b/ext/pdo_firebird/tests/bug_48877.phpt
@@ -9,6 +9,7 @@ require("testdb.inc");
 
 $value = '2';
 
+$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
 @$dbh->exec('DROP TABLE testz');
 $dbh->exec('CREATE TABLE testz (A integer)');
 $dbh->exec("INSERT INTO testz VALUES ('1')");
diff --git a/ext/pdo_firebird/tests/bug_53280.phpt b/ext/pdo_firebird/tests/bug_53280.phpt
index 645f7b3c87a..744aa0df7e3 100644
--- a/ext/pdo_firebird/tests/bug_53280.phpt
+++ b/ext/pdo_firebird/tests/bug_53280.phpt
@@ -7,6 +7,7 @@ PDO_Firebird: bug 53280 segfaults if query column count is less than param count
 
 require("testdb.inc");
 
+$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
 @$dbh->exec('DROP TABLE testz');
 $dbh->exec('CREATE TABLE testz(A VARCHAR(30), B VARCHAR(30), C VARCHAR(30))');
 $dbh->exec("INSERT INTO testz VALUES ('A', 'B', 'C')");
diff --git a/ext/pdo_firebird/tests/rowCount.phpt b/ext/pdo_firebird/tests/rowCount.phpt
index 81982e96b92..c7fb2634ae4 100644
--- a/ext/pdo_firebird/tests/rowCount.phpt
+++ b/ext/pdo_firebird/tests/rowCount.phpt
@@ -7,6 +7,7 @@ PDO_Firebird: rowCount
 
 require("testdb.inc");
 
+$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_SILENT);
 @$dbh->exec('DROP TABLE testz');
 $dbh->exec('CREATE TABLE testz (A VARCHAR(10))');
 $dbh->exec("INSERT INTO testz VALUES ('A')");