diff --git a/src/gsm/gprs_cipher_core.c b/src/gsm/gprs_cipher_core.c
index a0cf185..b833048 100644
--- a/src/gsm/gprs_cipher_core.c
+++ b/src/gsm/gprs_cipher_core.c
@@ -88,7 +88,7 @@
 	return selected_ciphers[algo]->run(out, len, kc, iv, dir);
 }
 
-/*! \brief Obtain key lenght for given GPRS cipher
+/*! Obtain key lenght for given GPRS cipher
  *  \param[in] algo Enum representive GPRS cipher
  *  \returns unsigned integer key length for supported algorithms,
  *  for GEA0 and unknown ciphers will return 0