diff --git a/sysdeps/unix/sysv/sco3.2.4/Makefile b/sysdeps/unix/sysv/sco3.2.4/Makefile
index 3c68c72994..61479b3938 100644
--- a/sysdeps/unix/sysv/sco3.2.4/Makefile
+++ b/sysdeps/unix/sysv/sco3.2.4/Makefile
@@ -1,3 +1,3 @@
 ifeq (posix,$(subdir))
-sysdep_routines := $(sysdep_routines) sco_pgrp.c
+sysdep_routines := $(sysdep_routines) sco_pgrp
 endif