diff --git a/otp.c b/otp.c
index ee04fbd..f4b72c5 100644
--- a/otp.c
+++ b/otp.c
@@ -46,9 +46,9 @@ static const int base64_decode_table[256] = {
 // USB Pad structure for external drive detection
 struct USBPadInfo {
     char chksum[65];           // 64-char checksum + null terminator
-    char pad_path[512];        // Full path to .pad file
-    char state_path[512];      // Full path to .state file
-    char mount_point[256];     // USB mount point for display
+    char pad_path[1024];       // Full path to .pad file
+    char state_path[1024];     // Full path to .state file
+    char mount_point[1024];    // USB mount point for display
     uint64_t state_offset;     // Current state offset
 };