diff --git a/Sanity/basic/test_lockdev.c b/Sanity/basic/test_lockdev.c
index 72ec1f8..80d3225 100644
--- a/Sanity/basic/test_lockdev.c
+++ b/Sanity/basic/test_lockdev.c
@@ -23,7 +23,10 @@ int main() {
     }
 
     while ((entry = readdir(dp))) {
-        if (strncmp(entry->d_name, "ttyS", 4) == 0) {
+        if (strncmp(entry->d_name, "tty", 3) == 0 &&
+            strcmp(entry->d_name, "tty") != 0 &&
+            strcmp(entry->d_name, "tty0") != 0) {
+
             snprintf(device, sizeof(device), "%s%s", DEVICE_PATH, entry->d_name);
             break;
         }
@@ -32,7 +35,7 @@ int main() {
     closedir(dp);
 
     if (entry == NULL) {
-        fprintf(stderr, "No tty device found ttyS*\n");
+        fprintf(stderr, "No suitable tty device found (excluding tty and tty0)\n");
         return 1;
     }