diff --git a/src/mail_processor.c b/src/mail_processor.c
index e0989c8..ddd562d 100644
--- a/src/mail_processor.c
+++ b/src/mail_processor.c
@@ -175,11 +175,6 @@ static int should_strip_header(const char *line, size_t line_len)
   return 0;
 }
 
-static int is_header_continuation(const char *line)
-{
-  return line && (line[0] == ' ' || line[0] == '\t');
-}
-
 /*
  * Locate the earliest CRLF-CRLF or LF-LF separator. (RFC 822)
  * Returns the start of the body and reports the separator length.