diff --git a/atapromise.c b/atapromise.c
index ca63df7..ab34a1e 100644
--- a/atapromise.c
+++ b/atapromise.c
@@ -144,7 +144,7 @@
 
 	msg_pwarn("Do not use this device as a generic programmer. It will leave anything outside\n"
 		  "the first %zu kB of the flash chip in an undefined state. It works fine for the\n"
-		  "purpose of updating the firmware of this device (padding may neccessary).\n",
+		  "purpose of updating the firmware of this device (padding may necessary).\n",
 		  rom_size / 1024);
 
 	return 0;
diff --git a/buspirate_spi.c b/buspirate_spi.c
index fad309f..437aa74 100644
--- a/buspirate_spi.c
+++ b/buspirate_spi.c
@@ -252,7 +252,7 @@
 	}
 	free(tmp);
 
-	/* Extract serialspeed paramater */
+	/* Extract serialspeed parameter */
 	tmp = extract_programmer_param("serialspeed");
 	if (tmp) {
 		for (i = 0; serialspeeds[i].name; i++) {
diff --git a/ch341a_spi.c b/ch341a_spi.c
index f88b624..9ebda0d 100644
--- a/ch341a_spi.c
+++ b/ch341a_spi.c
@@ -315,7 +315,7 @@
 /* De-assert and assert CS in one operation. */
 static void pluck_cs(uint8_t *ptr)
 {
-	/* This was measured to give a minumum deassertion time of 2.25 us,
+	/* This was measured to give a minimum deassertion time of 2.25 us,
 	 * >20x more than needed for most SPI chips (100ns). */
 	int delay_cnt = 2;
 	if (stored_delay_us) {
diff --git a/flashchips.c b/flashchips.c
index 1a73ba4..2001d8c 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -5533,7 +5533,7 @@
 		.model_id	= EXCEL_ES25P40,
 		.total_size	= 512,
 		.page_size	= 256,
-		/* 256-byte paramter page separate from memory array:
+		/* 256-byte parameter page separate from memory array:
 		 * supports read (0x53), fast read (0x5B), erase (0xD5) and program (0x52) instructions. */
 		.feature_bits	= FEATURE_WRSR_WREN,
 		.tested		= TEST_UNTESTED,
@@ -5564,7 +5564,7 @@
 		.model_id	= EXCEL_ES25P80,
 		.total_size	= 1024,
 		.page_size	= 256,
-		/* 256-byte paramter page separate from memory array:
+		/* 256-byte parameter page separate from memory array:
 		 * supports read (0x53), fast read (0x5B), erase (0xD5) and program (0x52) instructions. */
 		.feature_bits	= FEATURE_WRSR_WREN,
 		.tested		= TEST_UNTESTED,
@@ -5595,7 +5595,7 @@
 		.model_id	= EXCEL_ES25P16,
 		.total_size	= 2 * 1024,
 		.page_size	= 256,
-		/* 256-byte paramter page separate from memory array:
+		/* 256-byte parameter page separate from memory array:
 		 * supports read (0x53), fast read (0x5B), erase (0xD5) and program (0x52) instructions. */
 		.feature_bits	= FEATURE_WRSR_WREN,
 		.tested		= TEST_UNTESTED,
diff --git a/mstarddc_spi.c b/mstarddc_spi.c
index f6e573a..afe4e12 100644
--- a/mstarddc_spi.c
+++ b/mstarddc_spi.c
@@ -57,7 +57,7 @@
 	} else {
 		msg_pinfo("Info: Reset command was not sent. "
 			  "Either the noreset=1 option was used, "
-			  "or an error occured.\n");
+			  "or an error occurred.\n");
 	}
 
 	if (close(mstarddc_fd) < 0) {
diff --git a/physmap.c b/physmap.c
index 8dd50a5..8e80925 100644
--- a/physmap.c
+++ b/physmap.c
@@ -364,7 +364,7 @@
 }
 
 /* MSR abstraction implementations for Linux, OpenBSD, FreeBSD/Dragonfly, OSX, libpayload
- * and a non-working default implemenation on the bottom. See also hwaccess.h for some (re)declarations. */
+ * and a non-working default implementation on the bottom. See also hwaccess.h for some (re)declarations. */
 #if defined(__i386__) || defined(__x86_64__)
 
 #ifdef __linux__
diff --git a/platform.h b/platform.h
index 4af1c48..d290afc 100644
--- a/platform.h
+++ b/platform.h
@@ -80,7 +80,7 @@
 #error Unknown architecture
 #endif
 
-/* The next big hunk tries to guess endianess from various preprocessor macros */
+/* The next big hunk tries to guess endianness from various preprocessor macros */
 /* First some error checking in case some weird header has defined both.
  * NB: OpenBSD always defines _BIG_ENDIAN and _LITTLE_ENDIAN. */
 #if defined (__LITTLE_ENDIAN__) && defined (__BIG_ENDIAN__)
diff --git a/serial.c b/serial.c
index f08542d..e61df74 100644
--- a/serial.c
+++ b/serial.c
@@ -194,7 +194,7 @@
 				return 1;
 			}
 			/* We want whatever the termios looks like now, so the rest of the
-			   setup doesnt mess up the custom rate. */
+			   setup doesn't mess up the custom rate. */
 			if (tcgetattr(fd, &wanted) != 0) {
 				/* This should pretty much never happen (see above), but.. */
 				msg_perr_strerror("Could not fetch serial port configuration: ");