diff --git a/library/x509_csr_write.c b/library/x509_csr_write.c
index b744300..1eb2afb 100644
--- a/library/x509_csr_write.c
+++ b/library/x509_csr_write.c
@@ -68,7 +68,7 @@
 
 int x509write_csr_set_subject_name( x509write_csr *ctx, char *subject_name )
 {
-    return x509write_string_to_names( &ctx->subject, subject_name );
+    return x509_string_to_names( &ctx->subject, subject_name );
 }
 
 int x509write_csr_set_extension( x509write_csr *ctx,