diff --git a/sch2fig/sch.h b/sch2fig/sch.h
index 62ee69e..b1e2d70 100644
--- a/sch2fig/sch.h
+++ b/sch2fig/sch.h
@@ -117,7 +117,7 @@ struct sch_ctx {
 void decode_alignment(struct text *txt, char hor, char vert);
 
 void sch_render(const struct sheet *sheet);
-void sch_parse(struct sch_ctx *ctx, const char *line, const struct lib *lib);
+void sch_parse(struct sch_ctx *ctx, const char *file, const struct lib *lib);
 void sch_init(struct sch_ctx *ctx, bool recurse);
 
 #endif /* !SCH_H */