diff --git a/pattern.c b/pattern.c
index e8dc8d7..5778012 100644
--- a/pattern.c
+++ b/pattern.c
@@ -696,7 +696,7 @@ int fprint_pattern(FILE *stream, bp_pat_t *pat)
         CASE(CHAIN, FMT("("); PAT(data.first); FMT(", "); PAT(data.second); FMT(")"))
         CASE(MATCH, FMT("("); PAT(data.pat); FMT(", matches="); PAT(data.must_match); FMT(")"))
         CASE(NOT_MATCH, FMT("("); PAT(data.pat); FMT(", must_not_match="); PAT(data.must_not_match); FMT(")"))
-        CASE(REPLACE, FMT("("); PAT(data.pat); FMT(", \"%.*s\")", data.pat, data.len, data.text))
+        CASE(REPLACE, FMT("("); PAT(data.pat); FMT(", \"%.*s\")", data.len, data.text))
         CASE(REF, FMT("(%.*s)", data.len, data.name))
         CASE(NODENT)
         CASE(CURDENT)