diff --git a/tgt-pcb/Makefile.in b/tgt-pcb/Makefile.in
index 2275233dc..abf46cf93 100644
--- a/tgt-pcb/Makefile.in
+++ b/tgt-pcb/Makefile.in
@@ -53,6 +53,7 @@ all: dep pcb.tgt
 check: all
 
 clean:
+	rm -f fp.cc fp.h fp.output fp_lex.cc
 	rm -rf *.o dep pcb.tgt
 
 distclean: clean