diff --git a/zkey/zkey-cryptsetup.c b/zkey/zkey-cryptsetup.c
index 65716f3b..784c574f 100644
--- a/zkey/zkey-cryptsetup.c
+++ b/zkey/zkey-cryptsetup.c
@@ -455,7 +455,8 @@ static void cryptsetup_log(int level, const char *msg,
 		fprintf(stderr, "%s: %s", program_invocation_short_name, msg);
 		break;
 	case CRYPT_LOG_DEBUG:
-		fprintf(stderr, "%s: # %s\n", program_invocation_short_name, msg);
+		fprintf(stderr, "%s: # %s%s", program_invocation_short_name,
+			msg, msg[strlen(msg) - 1] == '\n' ? "" : "\n");
 		break;
 #ifdef CRYPT_DEBUG_JSON
 	case CRYPT_DEBUG_JSON: