diff --git a/src/analyze.c b/src/analyze.c
index 7d7ac72..0dcd8e7 100644
--- a/src/analyze.c
+++ b/src/analyze.c
@@ -84,6 +84,9 @@ void do_counting(struct conf_t *state)
 			case BACKUP:
 				range_p->backups++;
 				break;
+			default:
+				abort();
+				break;
 			}
 		}
 		/* Size of range size. */
diff --git a/src/other.c b/src/other.c
index 2b2cbf9..63d094b 100644
--- a/src/other.c
+++ b/src/other.c
@@ -411,6 +411,8 @@ int
 			if (!memcmp("  hardware ethernet", str, 19))
 				return PREFIX_HARDWARE_ETHERNET;
 			break;
+		default:
+			break;
 		}
 	}
 	if (!memcmp("lease ", str, 6))
@@ -464,6 +466,8 @@ int
 			if (!memcmp("  hardware ethernet", str, 19))
 				return PREFIX_HARDWARE_ETHERNET;
 			break;
+		default:
+			break;
 		}
 	}
 	if (!memcmp("  iaaddr ", str, 9))