diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index 1b2d64b25..82aa346d0 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -5167,7 +5167,7 @@ parser_yylex(parser_state *p)
     tokfix(p);
     if (is_float) {
 #ifdef MRB_WITHOUT_FLOAT
-      yywarning_s(p, "floating point numbers are not supported", tok(p));
+      yywarning(p, "floating point numbers are not supported");
       pylval.nd = new_int(p, "0", 10);
       return tINTEGER;
 #else