diff --git a/flags.go b/flags.go
index 29c2941..31d4e67 100644
--- a/flags.go
+++ b/flags.go
@@ -117,7 +117,7 @@ func InitFlags() {
 	InitFlagOutput(CmdSignInput)
 	// verify-input
 	InitFlagInput(CmdVerifyInput)
-	InitFlagPrivateKey(CmdVerifyInput)
+	InitFlagPublicKey(CmdVerifyInput)
 	InitFlagOutput(CmdVerifyInput)
 	InitFlagSignature(CmdVerifyInput)
 	// create-sign-request
diff --git a/main.go b/main.go
index 9b9ab0a..3235d1e 100644
--- a/main.go
+++ b/main.go
@@ -74,7 +74,7 @@ func sign_input(cmd *Command, args []string) {
 
 // verify a message using a signature and a public key
 func verify_input(cmd *Command, args []string) {
-	err := checkFlags(checkPrivateKey, checkInput, checkOutput, checkSignature)
+	err := checkFlags(checkPublicKey, checkInput, checkOutput, checkSignature)
 	if err != nil {
 		crash_with_help(cmd, ErrorFlagInput, "Flags invalid: %s", err)
 	}