diff --git a/libfreefare/tlv.3 b/libfreefare/tlv.3
index c308ef6..ce9689f 100644
--- a/libfreefare/tlv.3
+++ b/libfreefare/tlv.3
@@ -47,7 +47,7 @@ Mifare card manipulation library (libfreefare, \-lfreefare)
 .Ft "uint8_t *"
 .Fn tlv_encode "const uint8_t type" "const uint8_t *istream" "uint16_t isize" "size_t *osize"
 .Ft "uint8_t *"
-.Fn tlv_decode "const uint8_t *istream" "const uint8_t *type" "uint16_t *size"
+.Fn tlv_decode "const uint8_t *istream" "uint8_t *type" "uint16_t *size"
 .\"  ____                      _       _   _
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 .\" | | | |/ _ \/ __|/ __| '__| | '_ \| __| |/ _ \| '_ \