--- clamav-milter/clamav-milter.c
+++ clamav-milter/clamav-milter.c
@@ -2069,12 +2069,7 @@
 			logg(_("!Can't save PID in file %s\n"), pidfile);
 			return EX_CONFIG;
 		}
-#ifdef	C_LINUX
-		/* Ensure that all threads are kill()ed */
-		fprintf(fd, "-%d\n", (int)getpgrp());
-#else
 		fprintf(fd, "%d\n", (int)getpid());
-#endif
 		fclose(fd);
 		umask(old_umask);
 	} else if(tmpdir) {