diff --git a/parse.y b/parse.y
index dde6df8cfe..1935160fb2 100644
--- a/parse.y
+++ b/parse.y
@@ -8526,8 +8526,8 @@ parser_yylex(struct parser_params *parser)
 	    c = tLPAREN_ARG;
 	}
 	else if (IS_lex_state(EXPR_ENDFN) && space_seen && !lambda_beginning_p()) {
-	    rb_warning0("parentheses after method name is interpreted as");
-	    rb_warning0("an argument list, not a decomposed argument");
+	    rb_warning0("parentheses after method name is interpreted as "
+			"an argument list, not a decomposed argument");
 	}
 	paren_nest++;
 	COND_PUSH(0);