diff --git a/sys/src/cmd/mothra/forms.c b/sys/src/cmd/mothra/forms.c
index 3c8a8fd48..39afa62d4 100644
--- a/sys/src/cmd/mothra/forms.c
+++ b/sys/src/cmd/mothra/forms.c
@@ -3,6 +3,7 @@
 #include <draw.h>
 #include <event.h>
 #include <panel.h>
+#include "rtext.h"
 #include "mothra.h"
 #include "html.h"
 
@@ -357,7 +358,7 @@ char *seloption(Field *f){
 }
 void mkfieldpanel(Rtext *t){
 	Action *a;
-	Panel *win, *scrl, *menu, *pop, *button;
+	Panel *win, *scrl;
 	Field *f;
 
 	if((a = t->user) == nil)
diff --git a/sys/src/cmd/mothra/getpix.c b/sys/src/cmd/mothra/getpix.c
index 0ab52afc5..ed4a71b0b 100644
--- a/sys/src/cmd/mothra/getpix.c
+++ b/sys/src/cmd/mothra/getpix.c
@@ -23,7 +23,6 @@ char *pixcmd[]={
 };
 
 void getimage(Rtext *t, Www *w){
-	int pfd[2];
 	Action *ap;
 	Url *url;
 	Image *b;
@@ -64,6 +63,7 @@ void getimage(Rtext *t, Www *w){
 			s += sprint(s, " -x %d", ap->width);
 		if(ap->height>0)
 			s += sprint(s, " -y %d", ap->height);
+		USED(s);
 		if((fd = pipeline(fd, buf)) < 0)
 			goto Err;
 	}
diff --git a/sys/src/cmd/mothra/html.h b/sys/src/cmd/mothra/html.h
index b32dd0b5c..7393f6e6f 100644
--- a/sys/src/cmd/mothra/html.h
+++ b/sys/src/cmd/mothra/html.h
@@ -225,3 +225,7 @@ void endform(Hglob *);
 char *pl_getattr(Pair *, char *);
 int pl_hasattr(Pair *, char *);
 void pl_htmloutput(Hglob *, int, char *, Field *);
+
+#pragma incomplete Form
+#pragma incomplete Field
+
diff --git a/sys/src/cmd/mothra/mkfile b/sys/src/cmd/mothra/mkfile
index da9a2f23b..1340e43ce 100644
--- a/sys/src/cmd/mothra/mkfile
+++ b/sys/src/cmd/mothra/mkfile
@@ -16,7 +16,7 @@ HFILES=mothra.h html.h libpanel/panel.h libpanel/rtext.h
 BIN=/$objtype/bin
 </sys/src/cmd/mkone
 
-CFLAGS=-Dplan9 -Ilibpanel
+CFLAGS=-FTVw -Ilibpanel
 
 $LIB:V:
 	cd libpanel
diff --git a/sys/src/cmd/mothra/mothra.c b/sys/src/cmd/mothra/mothra.c
index ddc696738..0a6407231 100644
--- a/sys/src/cmd/mothra/mothra.c
+++ b/sys/src/cmd/mothra/mothra.c
@@ -297,8 +297,6 @@ void main(int argc, char *argv[]){
 	Event e;
 	enum { Eplumb = 128, Ekick = 256 };
 	Plumbmsg *pm;
-	Www *new;
-	Action *a;
 	char *url;
 	int i;
 
@@ -577,7 +575,7 @@ char *arg(char *s){
 }
 void save(int ifd, char *name){
 	char buf[NNAME+64];
-	int cfd, ofd;
+	int ofd;
 	if(ifd < 0){
 		message("save: %s: %r", name);
 		return;
@@ -972,7 +970,7 @@ Url* selurl(char *urlname){
  * get the file at the given url
  */
 void geturl(char *urlname, int post, int plumb, int map){
-	int i, fd, typ, pfd[2];
+	int i, fd, typ;
 	char cmd[NNAME];
 	ulong n;
 	Www *w;
@@ -1168,7 +1166,6 @@ void paste(Panel *p){
 }
 void hit3(int button, int item){
 	char name[NNAME];
-	char file[128];
 	Panel *swap;
 	int fd;
 	USED(button);
diff --git a/sys/src/cmd/mothra/rdhtml.c b/sys/src/cmd/mothra/rdhtml.c
index c347701db..12f2a7f3f 100644
--- a/sys/src/cmd/mothra/rdhtml.c
+++ b/sys/src/cmd/mothra/rdhtml.c
@@ -317,10 +317,8 @@ char *linkify(char *s){
  *	This doesn't work if removing an entity reference can lengthen the string!
  *	Fortunately, this doesn't happen.
  */
-void pl_rmentities(Hglob *g, char *s){
+void pl_rmentities(Hglob *, char *s){
 	char *t, *u, c, svc;
-	Entity *ep;
-	Rune r;
 	t=s;
 	do{
 		c=*s++;
@@ -466,7 +464,7 @@ int pl_getcomment(Hglob *g){
 				;
 			if(c==EOF)
 				break;
-			if((c=pl_nextc(g))=='-'){
+			if(pl_nextc(g)=='-'){
 				while((c=pl_nextc(g))=='-')
 					;
 				if(c==ETAG || c==EOF)
@@ -693,7 +691,7 @@ void plrdplain(char *name, int fd, Www *dst){
 	finish(dst);
 }
 void plrdhtml(char *name, int fd, Www *dst){
-	int t, tagerr;
+	int tagerr;
 	Stack *sp;
 	char buf[20];
 	char *str;