diff --git a/guile-readline/Makefile.am b/guile-readline/Makefile.am
index 77c892fba..987a3d784 100644
--- a/guile-readline/Makefile.am
+++ b/guile-readline/Makefile.am
@@ -44,10 +44,10 @@ pkginclude_HEADERS = readline.h
 ice9dir = $(datadir)/guile/$(VERSION)/ice-9
 ice9_DATA = readline.scm
 
+snarfcppopts = $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
 SUFFIXES = .x
 .c.x:
-	$(GUILE_SNARF) $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS) $< > $@ \
-	|| { rm $@; false; }
+	$(GUILE_SNARF) -o $@ $< $(snarfcppopts)
 
 EXTRA_DIST = readline.scm