diff --git a/t_1.c b/t_1.c
index 4ae2908..14ecf75 100644
--- a/t_1.c
+++ b/t_1.c
@@ -198,8 +198,13 @@ bool seader_recv_t1(Seader* seader, CCID_Message* message) {
     uint8_t NAD = message->payload[0];
     uint8_t rPCB = message->payload[1];
     uint8_t LEN = message->payload[2];
-    uint8_t LRC = message->payload[3 + LEN];
-    FURI_LOG_D(TAG, "NAD: %02X, rPCB: %02X, LEN: %02X, LRC: %02X", NAD, rPCB, LEN, LRC);
+    //uint8_t LRC = message->payload[3 + LEN];
+    //FURI_LOG_D(TAG, "NAD: %02X, rPCB: %02X, LEN: %02X, LRC: %02X", NAD, rPCB, LEN, LRC);
+
+    if(message->dwLength < (uint32_t)(3 + LEN + 1)) {
+        // incomplete frame
+        return false;
+    }
 
     if(rPCB == 0xE1) {
         // S(IFS response)