diff --git a/tests/src/Core/InstallerTest.php b/tests/src/Core/InstallerTest.php
index 7404e216e2..8cd1a3fad9 100644
--- a/tests/src/Core/InstallerTest.php
+++ b/tests/src/Core/InstallerTest.php
@@ -103,7 +103,7 @@ class InstallerTest extends MockedTest
 		$this->mockL10nT('File Information PHP module', 1);
 		$this->mockL10nT('Error: File Information PHP module required but not installed.', 1);
 		$this->mockL10nT('Program execution functions', 1);
-		$this->mockL10nT('Error: Program execution functions required but not enabled.', 1);
+		$this->mockL10nT('Error: Program execution functions (proc_open) required but not enabled.', 1);
 	}
 
 	private function assertCheckExist($position, $title, $help, $status, $required, $assertionArray)
@@ -248,7 +248,7 @@ class InstallerTest extends MockedTest
 		self::assertFalse($install->checkFunctions());
 		self::assertCheckExist(9,
 			'Program execution functions',
-			'Error: Program execution functions required but not enabled.',
+			'Error: Program execution functions (proc_open) required but not enabled.',
 			false,
 			true,
 			$install->getChecks());