--- a/filter.c	Fri Mar 30 18:54:29 2012 +0200
+++ b/filter.c	Fri Mar 30 18:54:55 2012 +0200
@@ -149,7 +149,7 @@
             close(read_pipe[1]);
             close(read_pipe[0]);
             execl(filter_par, filter_par, 0);
-            perror("execlp");
+            perror("execl");
             exit(-1);
             break;
         case -1: