diff --git a/drivers/fet_core.c b/drivers/fet_core.c
index d89f607..9f426ba 100644
--- a/drivers/fet_core.c
+++ b/drivers/fet_core.c
@@ -292,7 +292,7 @@ static int identify_olimex(struct fet_device *dev, const char *force_id)
 		if (fet_proto_xfer(&dev->proto, C_IDENT1, NULL, 0, 3,
 				   set_id, dev_id, 0) < 0) {
 			printc_err("fet: command C_IDENT1 with "
-				   "magic patern failed\n");
+				   "magic pattern failed\n");
 			return -1;
 		}
 
diff --git a/mspdebug.man b/mspdebug.man
index 70b3938..61b9344 100644
--- a/mspdebug.man
+++ b/mspdebug.man
@@ -204,7 +204,7 @@ Connect to system gpios. JTAG mode must be used, and
 only tty access is supported. Currently, this driver is only supported
 on Linux, FreeBSD and DragonFly BSD. The gpios to used must defined using
 a string like "tdi=7 tdo=8 tms=9 tck=4 rst=10 tst=11" via the
-\fB-d\fR option. (dont forget the quotes)
+\fB-d\fR option. (don't forget the quotes)
 
 .IP "\fBload-bsl\fR"
 Connect to a USB bootloader. The stub bootloader will be used to load a
@@ -801,7 +801,7 @@ Default input radix for address expressions. For address values with
 no radix specifier, this value gives the input radix, which is
 10 (decimal) by default.
 .IP "\fBquiet\fR (boolean)"
-If set, MSPDebug will supress most of its debug-related output. This option
+If set, MSPDebug will suppress most of its debug-related output. This option
 defaults to false, but can be set true on start-up using the \fB-q\fR
 command-line option.
 .SH ENVIRONMENT
diff --git a/ui/cmddb.c b/ui/cmddb.c
index fce328a..4eb5ca7 100644
--- a/ui/cmddb.c
+++ b/ui/cmddb.c
@@ -265,7 +265,7 @@ const struct cmddb_record commands[] = {
 "sym find <regex>\n"
 "    Search for symbols by regular expression.\n"
 "sym rename <regex> <string>\n"
-"    Replace every occurance of a pattern in symbol names.\n"
+"    Replace every occurrence of a pattern in symbol names.\n"
 	},
 	{
 		.name = "isearch",
diff --git a/util/opdb.c b/util/opdb.c
index bf1ef06..9b4a67e 100644
--- a/util/opdb.c
+++ b/util/opdb.c
@@ -43,7 +43,7 @@ static const struct opdb_key keys[] = {
 	{
 		.name = "quiet",
 		.type = OPDB_TYPE_BOOLEAN,
-		.help = "Supress debugging output.\n",
+		.help = "Suppress debugging output.\n",
 		.defval = {
 			.boolean = 0
 		}