diff --git a/lib/util.php b/lib/util.php
index 8db3c307f95..26e8579f6f1 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -475,8 +475,8 @@ class OC_Util {
 			}
 		}
 
-		// Try to use /dev/random
-		$fp = @file_get_contents('/dev/random', false, null, 0, $length);
+		// Try to use /dev/urandom
+		$fp = @file_get_contents('/dev/urandom', false, null, 0, $length);
 		if ($fp !== FALSE) {
 			$string = substr(bin2hex($fp), 0, $length);  
 			return $string;
@@ -509,12 +509,12 @@ class OC_Util {
 			}
 		}
 
-		// Check /dev/random
-		$fp = @file_get_contents('/dev/random', false, null, 0, 1);
+		// Check /dev/urandom
+		$fp = @file_get_contents('/dev/urandom', false, null, 0, 1);
 		if ($fp !== FALSE) {
 			return true;
 		}
 
 		return false;
 	}	
-}
\ No newline at end of file
+}