Index: common/printf/printf_core.c
===================================================================
--- common/printf/printf_core.c	(revision 694ca3d6a8a1e66e61249ea01e128d7d66908dae)
+++ common/printf/printf_core.c	(revision a72f3b87bcdb8b8f14877d2ce9c68a09661f54c3)
@@ -504,5 +504,5 @@
 		switch (base) {
 		case 2:
-			/* Binary formating is not standard, but usefull */
+			/* Binary formating is not standard, but useful */
 			if (printf_putchar('0', ps) == 1)
 				counter++;