diff --git a/src/main/java/nsusbloader/Utilities/NxdtUsbAbi1.java b/src/main/java/nsusbloader/Utilities/NxdtUsbAbi1.java
index 11299a1..afea175 100644
--- a/src/main/java/nsusbloader/Utilities/NxdtUsbAbi1.java
+++ b/src/main/java/nsusbloader/Utilities/NxdtUsbAbi1.java
@@ -184,7 +184,7 @@ class NxdtUsbAbi1 {
         final int fileNameLen = getLEint(message, 0x18);
         String filename = new String(message, 0x20, fileNameLen, StandardCharsets.UTF_8);
 
-        if (fileNameLen == 0 || fileNameLen > NXDT_FILE_PROPERTIES_MAX_NAME_LENGTH){
+        if (fileNameLen <= 0 || fileNameLen > NXDT_FILE_PROPERTIES_MAX_NAME_LENGTH){
             writeUsb(USBSTATUS_MALFORMED_REQUEST);
             logPrinter.print("Invalid filename length!", EMsgType.FAIL);
             return;