diff --git a/libraries/AP_Generator/AP_Generator.cpp b/libraries/AP_Generator/AP_Generator.cpp
index d612d00853..d5cfca045d 100644
--- a/libraries/AP_Generator/AP_Generator.cpp
+++ b/libraries/AP_Generator/AP_Generator.cpp
@@ -36,7 +36,7 @@ const AP_Param::GroupInfo AP_Generator::var_info[] = {
     // @Param: OPTIONS
     // @DisplayName: Generator Options
     // @Description: Bitmask of options for generators
-    // @Bitmask: 0:Supress Maintenance-Required Warnings
+    // @Bitmask: 0:Suppress Maintenance-Required Warnings
     // @User: Standard
     AP_GROUPINFO("OPTIONS", 2, AP_Generator, _options, 0),
 
@@ -91,7 +91,7 @@ void AP_Generator::init()
 
 void AP_Generator::update()
 {
-    // Return immediatly if not enabled. Don't support run-time disabling of generator
+    // Return immediately if not enabled. Don't support run-time disabling of generator
     if (_driver_ptr == nullptr) {
         return;
     }
@@ -124,7 +124,7 @@ bool AP_Generator::pre_arm_check(char* failmsg, uint8_t failmsg_len) const
             return true;
         }
         // Don't allow arming if we have disabled the generator since boot
-        strncpy(failmsg, "Generator disabled, reboot reqired", failmsg_len);
+        strncpy(failmsg, "Generator disabled, reboot required", failmsg_len);
         return false;
     }
     if (_driver_ptr == nullptr) {
diff --git a/libraries/AP_Generator/AP_Generator_Backend.cpp b/libraries/AP_Generator/AP_Generator_Backend.cpp
index 99de236336..6a74ee53e2 100644
--- a/libraries/AP_Generator/AP_Generator_Backend.cpp
+++ b/libraries/AP_Generator/AP_Generator_Backend.cpp
@@ -16,7 +16,7 @@
 
 #if HAL_GENERATOR_ENABLED
 
-// Base class consructor
+// Base class constructor
 AP_Generator_Backend::AP_Generator_Backend(AP_Generator& frontend) :
     _frontend(frontend)
 {
diff --git a/libraries/AP_Generator/AP_Generator_IE_650_800.h b/libraries/AP_Generator/AP_Generator_IE_650_800.h
index 4107f463fd..94e4c50a25 100644
--- a/libraries/AP_Generator/AP_Generator_IE_650_800.h
+++ b/libraries/AP_Generator/AP_Generator_IE_650_800.h
@@ -46,7 +46,7 @@ private:
     static const uint32_t ERROR_START_UNDER_PRESS = (1U << 19); // (0x80000), Tank pressure < 6 barg
     static const uint32_t ERROR_TANK_UNDER_PRESS  = (1U << 18); // (0x40000), Tank pressure < 5 barg
     static const uint32_t ERROR_TANK_LOW_PRESS    = (1U << 17); // (0x20000), Tank pressure < 15 barg
-    static const uint32_t ERROR_SAFETY_FLAG       = (1U << 16); // (0x10000), Fuel cell's internal saftey flags not set true
+    static const uint32_t ERROR_SAFETY_FLAG       = (1U << 16); // (0x10000), Fuel cell's internal safety flags not set true
     static const uint32_t ERROR_DENY_START1       = (1U << 15); // (0x8000), Stack 1 denied start
     static const uint32_t ERROR_DENY_START2       = (1U << 14); // (0x4000), Stack 2 denied start
     static const uint32_t ERROR_STACK_UT1         = (1U << 13); // (0x2000), Stack 1 under temperature (<5 degC)
@@ -74,7 +74,7 @@ private:
                                 | ERROR_START_TIMEOUT         // (0x200000), Fuel cell's internal State == start for > 30 s
                                 | ERROR_START_UNDER_PRESS     // (0x80000), Tank pressure < 6 barg
                                 | ERROR_TANK_UNDER_PRESS      // (0x40000), Tank pressure < 5 barg
-                                | ERROR_SAFETY_FLAG           // (0x10000), Fuel cell's internal saftey flags not set true
+                                | ERROR_SAFETY_FLAG           // (0x10000), Fuel cell's internal safety flags not set true
                                 | ERROR_DENY_START1           // (0x8000), Stack 1 denied start
                                 | ERROR_DENY_START2           // (0x4000), Stack 2 denied start
                                 | ERROR_BAT_UV_DENY           // (0x400), Battery under voltage (21.6 V) and master denied
diff --git a/libraries/AP_Generator/AP_Generator_IE_FuelCell.h b/libraries/AP_Generator/AP_Generator_IE_FuelCell.h
index 13a852d9a3..84395f1125 100644
--- a/libraries/AP_Generator/AP_Generator_IE_FuelCell.h
+++ b/libraries/AP_Generator/AP_Generator_IE_FuelCell.h
@@ -91,7 +91,7 @@ protected:
     // Returns true if a complete sentence was successfully decoded or if the buffer is full.
     bool decode(char c);
 
-    // Unit specific decoding to process characters recieved and build sentence
+    // Unit specific decoding to process characters received and build sentence
     virtual void decode_latest_term(void) = 0;
 
     // Check if we should notify on any change of fuel cell state
diff --git a/libraries/AP_Generator/AP_Generator_RichenPower.cpp b/libraries/AP_Generator/AP_Generator_RichenPower.cpp
index c021cbd43e..530f8192b3 100644
--- a/libraries/AP_Generator/AP_Generator_RichenPower.cpp
+++ b/libraries/AP_Generator/AP_Generator_RichenPower.cpp
@@ -190,7 +190,7 @@ bool AP_Generator_RichenPower::generator_ok_to_run() const
 constexpr float AP_Generator_RichenPower::heat_required_for_run()
 {
     // assume that heat is proportional to RPM.  Return a number
-    // proportial to RPM.  Reduce it to account for the cooling some%/s
+    // proportional to RPM.  Reduce it to account for the cooling some%/s
     // cooling
     return (45 * IDLE_RPM) * heat_environment_loss_30s;
 }