diff --git a/Makefile.am b/Makefile.am
index 9a9130c4..a554ce12 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -60,7 +60,7 @@ EXTRA_DIST = \
 if BUILD_PIDOF
 usrbin_exec_PROGRAMS += pidof
 dist_man_MANS += pidof.1
-pidof_SOURCES = pidof.c $(top_srcdir)/lib/fileutils.c
+pidof_SOURCES = pidof.c lib/fileutils.c
 else
   EXTRA_DIST += pidof.1
 endif
@@ -68,7 +68,7 @@ endif
 if BUILD_KILL
 bin_PROGRAMS = kill
 dist_man_MANS += kill.1
-kill_SOURCES = skill.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c $(top_srcdir)/lib/nsutils.c
+kill_SOURCES = skill.c lib/strutils.c lib/fileutils.c lib/nsutils.c
 else
   EXTRA_DIST += kill.1
 endif
@@ -80,9 +80,9 @@ usrbin_exec_PROGRAMS += \
 dist_man_MANS += \
 	slabtop.1 \
 	watch.1
-slabtop_SOURCES = slabtop.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c
+slabtop_SOURCES = slabtop.c lib/strutils.c lib/fileutils.c
 slabtop_LDADD = @NCURSES_LIBS@
-watch_SOURCES = watch.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c
+watch_SOURCES = watch.c lib/strutils.c lib/fileutils.c
 watch_LDADD = @WATCH_NCURSES_LIBS@
 endif
 
@@ -90,8 +90,8 @@ if BUILD_SKILL
 usrbin_exec_PROGRAMS += \
 	skill \
 	snice
-skill_SOURCES = skill.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c $(top_srcdir)/lib/nsutils.c
-snice_SOURCES = skill.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c $(top_srcdir)/lib/nsutils.c
+skill_SOURCES = skill.c lib/strutils.c lib/fileutils.c lib/nsutils.c
+snice_SOURCES = skill.c lib/strutils.c lib/fileutils.c lib/nsutils.c
 dist_man_MANS += \
 	skill.1 \
 	snice.1
@@ -101,16 +101,16 @@ else
 	snice.1
 endif
 
-free_SOURCES = free.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c
-pgrep_SOURCES = pgrep.c $(top_srcdir)/lib/fileutils.c $(top_srcdir)/lib/nsutils.c
-pkill_SOURCES = pgrep.c $(top_srcdir)/lib/fileutils.c $(top_srcdir)/lib/nsutils.c
-pmap_SOURCES = pmap.c $(top_srcdir)/lib/fileutils.c
-pwdx_SOURCES = pwdx.c $(top_srcdir)/lib/fileutils.c
-sysctl_SOURCES = sysctl.c $(top_srcdir)/lib/fileutils.c
-tload_SOURCES = tload.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c
-uptime_SOURCES = uptime.c $(top_srcdir)/lib/fileutils.c
-vmstat_SOURCES = vmstat.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c
-w_SOURCES = w.c $(top_srcdir)/lib/fileutils.c
+free_SOURCES = free.c lib/strutils.c lib/fileutils.c
+pgrep_SOURCES = pgrep.c lib/fileutils.c lib/nsutils.c
+pkill_SOURCES = pgrep.c lib/fileutils.c lib/nsutils.c
+pmap_SOURCES = pmap.c lib/fileutils.c
+pwdx_SOURCES = pwdx.c lib/fileutils.c
+sysctl_SOURCES = sysctl.c lib/fileutils.c
+tload_SOURCES = tload.c lib/strutils.c lib/fileutils.c
+uptime_SOURCES = uptime.c lib/fileutils.c
+vmstat_SOURCES = vmstat.c lib/strutils.c lib/fileutils.c
+w_SOURCES = w.c lib/fileutils.c
 
 if EXAMPLE_FILES
 sysconf_DATA = sysctl.conf