diff --git a/htdocs/core/class/CMailFile.class.php b/htdocs/core/class/CMailFile.class.php
index 81d5f89a2eb..f01c2671a67 100644
--- a/htdocs/core/class/CMailFile.class.php
+++ b/htdocs/core/class/CMailFile.class.php
@@ -2068,7 +2068,7 @@ class CMailFile
 			}
 		}
 
-		sleep(1000);
+		sleep(1);
 
 		return $_retVal;
 	}