diff --git a/src/tools/dumpnbt.cpp b/src/tools/dumpnbt.cpp
index 678b1be..2bd1ed1 100644
--- a/src/tools/dumpnbt.cpp
+++ b/src/tools/dumpnbt.cpp
@@ -294,7 +294,6 @@ int main(int argc, char* argv[]) {
     std::vector<CLI::Flag> flags;
     flags.push_back(CLI::Flag('h', "help", "print help and exit"));
     flags.push_back(CLI::Flag('l', "license", "print license information and exit"));
-    flags.push_back(CLI::Flag('x', "hexadecimal", "print numbers in hex format"));
     std::vector<CLI::Option> options;
     std::vector<CLI::Argument> arguments;
     arguments.push_back(CLI::Argument("FILE", "path of the file to dump"));