diff --git a/lib/headers.h b/lib/headers.h
index d6acc03c21..48c013b04d 100644
--- a/lib/headers.h
+++ b/lib/headers.h
@@ -46,7 +46,7 @@ CURLcode Curl_headers_push(struct Curl_easy *data, const char *header,
 CURLcode Curl_headers_cleanup(struct Curl_easy *data);
 
 #else
-#define Curl_headers_push(x,y,z) CURLE_NOT_BUILT_IN
+#define Curl_headers_push(x,y,z) CURLE_OK
 #define Curl_headers_cleanup(x) Curl_nop_stmt
 #endif