--- a/wvparse.c
+++ b/wvparse.c
@@ -35,6 +35,9 @@
 #include <gsf/gsf-input-stdio.h>
 #include <gsf/gsf-utils.h>
 
+int wvOLEDecode_gsf (wvParseStruct *, GsfInput *, wvStream **, wvStream **,
+		     wvStream **, wvStream **, wvStream **);
+
 int
 wvInit (void)
 {