diff --git a/bin/sh/parser.c b/bin/sh/parser.c
index d324d88a8f18..da6defdb2c79 100644
--- a/bin/sh/parser.c
+++ b/bin/sh/parser.c
@@ -1671,7 +1671,7 @@ parsesub: {
 					c = pgetc_linecont();
 				} while (is_digit(c));
 			} else {
-				STPUTC(c, out);
+				USTPUTC(c, out);
 				c = pgetc_linecont();
 			}
 		} else if (is_special(c)) {