diff --git a/src/frontend/Makefile.am b/src/frontend/Makefile.am
index a964842af..d93b48c05 100644
--- a/src/frontend/Makefile.am
+++ b/src/frontend/Makefile.am
@@ -198,5 +198,7 @@ AM_YFLAGS = -d
 
 MAINTAINERCLEANFILES = Makefile.in
 
+$(srcdir)/parse.c : parse-bison.c
+
 parse-bison.c : parse-bison.y
 	$(am__skipyacc) $(YACCCOMPILE) -o $@ $<
diff --git a/src/spicelib/parser/Makefile.am b/src/spicelib/parser/Makefile.am
index 3d2692d11..807b52eb7 100644
--- a/src/spicelib/parser/Makefile.am
+++ b/src/spicelib/parser/Makefile.am
@@ -67,6 +67,8 @@ libinp_la_SOURCES = \
 		sperror.c	\
 		inpxx.h
 
+$(srcdir)/inpptree.c : inpptree-parser.c
+
 inpptree-parser.c : inpptree-parser.y
 	$(am__skipyacc) $(YACCCOMPILE) -o $@ $<