diff --git a/commands.md b/commands.md
index 213a119..9dd09f9 100644
--- a/commands.md
+++ b/commands.md
@@ -746,7 +746,7 @@ Supported signal types:
 Signal Type|Setting|Notes
 -----------|-------|-----
 Tachometer|TACHO|Send normal tachometer pulses to indicate rotation speed.
-Locked Rotor (Alarm)|LRA,treshold_rpm,locked_signal_level|Send Locked Rotor Alarm signal, when RPM is below treshold RPM speed send the indicated signal (HIGH or LOW).
+Locked Rotor (Alarm)|LRA,threshold_rpm,locked_signal_level|Send Locked Rotor Alarm signal, when RPM is below threshold RPM speed send the indicated signal (HIGH or LOW).
 
 *NOTE!* When changing RPM Mode for a mbfan (output), system must be reset before change takes effect.
 
@@ -1167,7 +1167,7 @@ Sensor numbering:
  - VSENSORS: 101, 102, ...
 
 
-Supporte I2C sensors:
+Supported I2C sensors:
 
 Sensor Model|Possible Addresses|Description|Notes
 ------------|------------------|-----------|-----
@@ -1910,7 +1910,7 @@ Unused flash memory:                   1151488
 
 ### SYStem:I2C?
 Returns status if I2C bus is active (available) currently.
-Depening on board model I2C may not be available at all
+Depending on board model I2C may not be available at all
 or may only be available if SPI is not active.
 
 Returns:
diff --git a/src/command.c b/src/command.c
index dea1990..3205d78 100644
--- a/src/command.c
+++ b/src/command.c
@@ -70,7 +70,7 @@ extern const char fanpico_credits_text[];
 
 
 /**
- * Exract (unsigned) number from end of command string.
+ * Extract (unsigned) number from end of command string.
  *
  * If string is "MBFAN3" return value is 3.
  *
@@ -110,7 +110,7 @@ static int get_cmd_index(const char *cmd)
 
 
 /**
- * Return ealier (sub)command string
+ * Return earlier (sub)command string
  *
  * If full command was "CONF:FAN2:HYST:PWM". Depth 0 returns "HYST"
  * and depth 1 returns "FAN2".
@@ -141,7 +141,7 @@ static const char* get_prev_cmd(const struct prev_cmd_t *prev_cmd, uint depth)
  * If full command was "CONF:FAN3:NAME?", then depth 0 returns "FAN3"
  * and depth 1 returns "CONF".
  *
- * @param prev_cmd Strucutre storing previous sub commands
+ * @param prev_cmd Structure storing previous sub commands
  * @param depth Which command to return (0=last, 1=2nd to last, ...)
  *
  * @return number extracted from specified subcommand (negative value indicates error)
@@ -367,7 +367,7 @@ int cmd_version(const char *cmd, const char *args, int query, struct prev_cmd_t
 	if (query) {
 		printf("%s\n", credits);
 #ifdef __GNUC__
-		printf("Compiled with: gcc v%s\n\n", __VERSION__);
+		printf("Compiled with: GCC v%s\n\n", __VERSION__);
 #endif
 	}
 
@@ -3278,7 +3278,7 @@ static const struct cmd_t* run_cmd(char *cmd, const struct cmd_t *cmd_level, str
 /**
  * Process command string received from user.
  *
- * Splits command string into multiple commads by ';' character.
+ * Splits command string into multiple commands by ';' character.
  * And executes each command using run_cmd() function.
  *
  * @param state Current system state.
diff --git a/src/onewire.c b/src/onewire.c
index 5be064f..56857c0 100644
--- a/src/onewire.c
+++ b/src/onewire.c
@@ -167,7 +167,7 @@ void setup_onewire_bus()
 
 		onewire_bus->ctx = pico_1wire_init(ONEWIRE_PIN, -1, true);
 		if (!onewire_bus->ctx) {
-			log_msg(LOG_ERR, "1-Wire intialization failed!");
+			log_msg(LOG_ERR, "1-Wire initialization failed!");
 			return;
 		}
 		onewire_scan_bus();