diff --git a/install/lib/install.lib.php b/install/lib/install.lib.php
index 1663a957800cfc8e7a074cc4f6d838bd3d0ccbd9..5a2737a1060b901cf10dc88c1a04bc21b0208db9 100644
--- a/install/lib/install.lib.php
+++ b/install/lib/install.lib.php
@@ -865,7 +865,7 @@ function getapachemodules() {
 		return array();
 	}
 	
-	exec($cmd, $output, $return_var);
+	exec($cmd . ' 2>/dev/null', $output, $return_var);
 	if($return_var != 0 || !$output[0]) {
 		$app->log("Could not check apache modules, apachectl did not return any data.", LOGLEVEL_WARN);
 		return array();
diff --git a/server/lib/classes/system.inc.php b/server/lib/classes/system.inc.php
index 0348faecbcdf4351c36c07bc75e1a3c47f94aea6..16e91ae9b2e74dec9adead0f3a5775b269232b05 100644
--- a/server/lib/classes/system.inc.php
+++ b/server/lib/classes/system.inc.php
@@ -1770,7 +1770,7 @@ class system{
 			return array();
 		}
 		
-		exec($cmd, $output, $return_var);
+		exec($cmd . ' 2>/dev/null', $output, $return_var);
 		if($return_var != 0 || !$output[0]) {
 			$app->log("Could not check apache modules, apachectl did not return any data.", LOGLEVEL_WARN);
 			return array();