diff --git a/dump1090.c b/dump1090.c
index 6553ba2..a6e3c59 100644
--- a/dump1090.c
+++ b/dump1090.c
@@ -362,7 +362,7 @@ void showHelp(void) {
 "--net-bo-port <port>     TCP Beast output listen port (default: 30005)\n"
 "--net-ro-size <size>     TCP raw output minimum size (default: 0)\n"
 "--net-ro-rate <rate>     TCP raw output memory flush rate (default: 0)\n"
-"--lat <latitude>         Reference/receiver latitide for surface posn (opt)\n"
+"--lat <latitude>         Reference/receiver latitude for surface posn (opt)\n"
 "--lon <longitude>        Reference/receiver longitude for surface posn (opt)\n"
 "--fix                    Enable single-bits error correction using CRC\n"
 "--no-fix                 Disable single-bits error correction using CRC\n"
diff --git a/mode_s.c b/mode_s.c
index 08cb5ff..8cd9987 100644
--- a/mode_s.c
+++ b/mode_s.c
@@ -762,7 +762,7 @@ char *cf_str[8] = {
     /* 1 */ "ADS-B ES/NT device with other address",
     /* 2 */ "Fine format TIS-B",
     /* 3 */ "Coarse format TIS-B",
-    /* 4 */ "TIS-B managment message",
+    /* 4 */ "TIS-B management message",
     /* 5 */ "TIS-B relay of ADS-B message with other address",
     /* 6 */ "ADS-B rebroadcast using DF-17 message format",
     /* 7 */ "Reserved"