diff --git a/sys/src/cmd/mothra/mkfile b/sys/src/cmd/mothra/mkfile
index 3eb71e48a..da9a2f23b 100644
--- a/sys/src/cmd/mothra/mkfile
+++ b/sys/src/cmd/mothra/mkfile
@@ -11,14 +11,12 @@ CFILES= \
 	rdhtml.c \
 	url.c \
 
-OFILES=${CFILES:%.c=%.$O} version.$O
+OFILES=${CFILES:%.c=%.$O}
 HFILES=mothra.h html.h libpanel/panel.h libpanel/rtext.h
 BIN=/$objtype/bin
 </sys/src/cmd/mkone
 
 CFLAGS=-Dplan9 -Ilibpanel
-version.c:	$CFILES
-	date|sed 's/^... //;s/ +/-/g;s/.*/char version[]="&";/' >version.c
 
 $LIB:V:
 	cd libpanel
@@ -26,4 +24,4 @@ $LIB:V:
 
 clean nuke:V:
 	@{ cd libpanel; mk $target }
-	rm -f *.[$OS] [$OS].out version.c $TARG
+	rm -f *.[$OS] [$OS].out $TARG
diff --git a/sys/src/cmd/mothra/mothra.h b/sys/src/cmd/mothra/mothra.h
index 6f74d0b50..665f7084d 100644
--- a/sys/src/cmd/mothra/mothra.h
+++ b/sys/src/cmd/mothra/mothra.h
@@ -102,5 +102,4 @@ void geturl(char *, int, int, int);
 int urlpost(Url*, char*);
 int urlget(Url*, int);
 int urlresolve(Url *);
-char version[];
 Mouse mouse;