diff --git a/ext/standard/file.c b/ext/standard/file.c
index f9384b17689..4fce9179bcb 100644
--- a/ext/standard/file.c
+++ b/ext/standard/file.c
@@ -1713,6 +1713,7 @@ PHP_FUNCTION(fd_set)
                 FD_SET(fd, &readfd);
                 if(fd > max_fd) max_fd = fd;
 		}
+	efree(args);
 	}
 	RETURN_LONG(1);
 }