diff --git a/common/command.c b/common/command.c
index 3f691399cbe..0f9dd06d72b 100644
--- a/common/command.c
+++ b/common/command.c
@@ -484,7 +484,7 @@ int cmd_get_data_size(const char *arg, int default_size)
 		case 'q':
 			if (MEM_SUPPORT_64BIT_DATA)
 				return 8;
-			/* no break */
+			fallthrough;
 		default:
 			return CMD_DATA_SIZE_ERR;
 		}
diff --git a/lib/tiny-printf.c b/lib/tiny-printf.c
index 0503c17341f..b8fc8355c4a 100644
--- a/lib/tiny-printf.c
+++ b/lib/tiny-printf.c
@@ -282,7 +282,7 @@ static int _vprintf(struct printf_info *info, const char *fmt, va_list va)
 					break;
 				}
 				islong = true;
-				/* no break */
+				fallthrough;
 			case 'x':
 				if (islong) {
 					num = va_arg(va, unsigned long);
diff --git a/net/net.c b/net/net.c
index 1828f1cca36..5219367e391 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1559,7 +1559,7 @@ common:
 			puts("*** ERROR: `ipaddr' not set\n");
 			return 1;
 		}
-		/* Fall through */
+		fallthrough;
 
 #ifdef CONFIG_CMD_RARP
 	case RARP: