diff --git a/scripts/daemon/lesavka-core.sh b/scripts/daemon/lesavka-core.sh
index b9a385f..e7f87db 100644
--- a/scripts/daemon/lesavka-core.sh
+++ b/scripts/daemon/lesavka-core.sh
@@ -133,14 +133,14 @@ uvc_fifo_min() {
 
 uvc_fifo_min_debugfs() {
     local path="$1"
-    awk -F': ' '/^g_tx_fifo_size\\[/{print $2}' "$path" 2>/dev/null | awk '
+    awk -F': ' '/^g_tx_fifo_size\[/{print $2}' "$path" 2>/dev/null | awk '
         $1 > 0 { if (min == "" || $1 < min) min = $1 }
-        END { if (min != "") print min }'
+        END { if (min != "") print min }' || true
 }
 
 uvc_fifo_np_debugfs() {
     local path="$1"
-    awk -F': ' '/^g_np_tx_fifo_size/{print $2; exit}' "$path" 2>/dev/null
+    awk -F': ' '/^g_np_tx_fifo_size/{print $2; exit}' "$path" 2>/dev/null || true
 }
 
 compute_uvc_payload_cap() {
diff --git a/server/src/bin/lesavka-uvc.rs b/server/src/bin/lesavka-uvc.rs
index f6113f7..3eddecc 100644
--- a/server/src/bin/lesavka-uvc.rs
+++ b/server/src/bin/lesavka-uvc.rs
@@ -295,6 +295,11 @@ impl UvcConfig {
                     cap.non_periodic_dw
                 );
             }
+        } else {
+            eprintln!(
+                "[lesavka-uvc] payload cap unavailable; using max_packet {}",
+                max_packet
+            );
         }
         if env::var("LESAVKA_UVC_BULK").is_ok() {
             max_packet = max_packet.min(512);