diff --git a/src/CommandFormats.hh b/src/CommandFormats.hh
index e376782f..7d46738e 100644
--- a/src/CommandFormats.hh
+++ b/src/CommandFormats.hh
@@ -1509,7 +1509,7 @@ struct C_Login_DC_PC_GC_9D {
   le_uint64_t unused;
   le_uint32_t sub_version;
   uint8_t is_extended; // If 1, structure has extended format
-  uint8_t language; // 0 = JP, 1 = EN, 2 = DE (?), 3 = FR (?), 4 = ES
+  uint8_t language; // 0 = JP, 1 = EN, 2 = DE, 3 = FR, 4 = ES
   parray<uint8_t, 0x2> unused3; // Always zeroes?
   ptext<char, 0x10> v1_serial_number;
   ptext<char, 0x10> v1_access_key;
diff --git a/src/Quest.cc b/src/Quest.cc
index e955f977..a40648f6 100644
--- a/src/Quest.cc
+++ b/src/Quest.cc
@@ -81,7 +81,7 @@ struct PSOGCIFileHeader {
   // the encrypted header (below) and all encrypted data after it.
   be_uint32_t data_size;
   // To compute checksum, set checksum to zero, then compute the CRC32 of all
-  // fields in this struct except gci_header. (Yes, including the checksum
+  // fields in this struct starting with game_name. (Yes, including the checksum
   // field, which is temporarily zero.)
   be_uint32_t checksum;