diff --git a/share/doc/papers/timecounter/Makefile b/share/doc/papers/timecounter/Makefile
index e866aad2c9f7..252dba347761 100644
--- a/share/doc/papers/timecounter/Makefile
+++ b/share/doc/papers/timecounter/Makefile
@@ -5,9 +5,16 @@
 # or you will not get the illustration.
 VOLUME=	papers
 DOC=	timecounter
-SRCS=	tmac.usenix timecounter.ms
+SRCS=	tmac.usenix timecounter.ms-patched
+EXTRA=	fig1.eps fig2.eps fig3.eps fig4.eps fig5.eps gps.ps intr.ps
+MACROS=	-ms
+CLEANFILES=	timecounter.ms-patched
 USE_PIC=1
 USE_EQN=1
 USE_TBL=1
 
+timecounter.ms-patched: timecounter.ms
+	sed -E -e 's;(gps|intr).ps;${.CURDIR}/&;' -e 's;fig[0-9].eps;${.CURDIR}/&;' \
+		${.ALLSRC} > ${.TARGET}
+
 .include <bsd.doc.mk>