diff --git a/tools/src/bin/opgpcard/cli.rs b/tools/src/bin/opgpcard/cli.rs
index a21ef96..116c948 100644
--- a/tools/src/bin/opgpcard/cli.rs
+++ b/tools/src/bin/opgpcard/cli.rs
@@ -31,7 +31,7 @@ pub enum Command {
         verbose: bool,
 
         /// Print public key material for each key slot
-        #[clap(name = "pkm", short = 'p', long = "public-key-material")]
+        #[clap(name = "pkm", short = 'K', long = "public-key-material")]
         pkm: bool,
     },