diff --git a/telnetd/state.c b/telnetd/state.c
index ff0828d..93de48e 100644
--- a/telnetd/state.c
+++ b/telnetd/state.c
@@ -113,7 +113,7 @@ telrcv(void)
 			if ((c == 0) || (c == '\n')) {
 				break;
 			}
-			/* FALL THROUGH */
+			/* FALLTHROUGH */
 
 		case TS_DATA:
 			if (c == IAC) {
@@ -1311,7 +1311,7 @@ suboption(void)
 			case ENV_ESC:
 				if (!SB_EOF())
 					c = SB_GET();
-				/* FALL THROUGH */
+				/* FALLTHROUGH */
 			default:
 				empty = 0;
 				continue;
@@ -1398,7 +1398,7 @@ suboption(void)
 			if (SB_EOF())
 				break;
 			c = SB_GET();
-			/* FALL THROUGH */
+			/* FALLTHROUGH */
 		default:
 			*cp++ = c;
 			break;