diff --git a/otp.c b/otp.c
index 49e26c5..cdd715b 100644
--- a/otp.c
+++ b/otp.c
@@ -2447,7 +2447,7 @@ int get_filename_with_default(const char* prompt, const char* default_path, char
             }
         } else if (c >= 32 && c <= 126) {
             // Printable character
-            if (buffer_len < sizeof(edit_buffer) - 1) {
+            if (buffer_len < (int)sizeof(edit_buffer) - 1) {
                 // Move everything after cursor one position right
                 memmove(&edit_buffer[cursor_pos + 1], &edit_buffer[cursor_pos], buffer_len - cursor_pos + 1);
                 edit_buffer[cursor_pos] = c;
diff --git a/test_file.txt.otp.asc b/test_file.txt.otp.asc
new file mode 100644
index 0000000..779c9e5
--- /dev/null
+++ b/test_file.txt.otp.asc
@@ -0,0 +1,7 @@
+-----BEGIN OTP MESSAGE-----
+Version: v0.2.29
+Pad-ChkSum: d0d4a489354348b08d8c7b324814d8c50010042e9da47f2c973f32a16a09101b
+Pad-Offset: 57
+
+05S8GfS0tFfczNMUz0xrieFGoPSREM4uo5QhFGoBCcOzjfTXTDMt3hRtAQ==
+-----END OTP MESSAGE-----