diff --git a/libraries/AP_Generator/AP_Generator.cpp b/libraries/AP_Generator/AP_Generator.cpp
index a6ff3f08f07dd..cf28d1fd661b0 100644
--- a/libraries/AP_Generator/AP_Generator.cpp
+++ b/libraries/AP_Generator/AP_Generator.cpp
@@ -173,7 +173,7 @@ bool AP_Generator::run()
     return _driver_ptr->run();
 }
 
-int AP_Generator::get_errorcode()
+uint32_t AP_Generator::get_errorcode()
 {
     // Return 0 if no driver
     if (_driver_ptr == nullptr) {
diff --git a/libraries/AP_Generator/AP_Generator.h b/libraries/AP_Generator/AP_Generator.h
index d160077892cb7..c6cde1e78dbca 100644
--- a/libraries/AP_Generator/AP_Generator.h
+++ b/libraries/AP_Generator/AP_Generator.h
@@ -58,7 +58,7 @@ class AP_Generator
     bool run(void);
 
     // error code returns 0 if no error or the error code return function is not implemented
-    int get_errorcode(void);
+    uint32_t get_errorcode(void);
 
     void send_generator_status(const class GCS_MAVLINK &channel);
 
diff --git a/libraries/AP_Generator/AP_Generator_Backend.h b/libraries/AP_Generator/AP_Generator_Backend.h
index cb987a5371123..e44349a9de207 100644
--- a/libraries/AP_Generator/AP_Generator_Backend.h
+++ b/libraries/AP_Generator/AP_Generator_Backend.h
@@ -33,7 +33,7 @@ class AP_Generator_Backend
     virtual bool run(void) { return false; }
 
     // Error code returns 0 if no error or the error code return function is not implemented
-    virtual int get_errorcode(void) {return 0;}
+    virtual uint32_t get_errorcode(void) {return 0;}
 
     // Use generator mavlink message
     virtual void send_generator_status(const GCS_MAVLINK &channel) {}
diff --git a/libraries/AP_Generator/AP_Generator_IE_FuelCell.h b/libraries/AP_Generator/AP_Generator_IE_FuelCell.h
index a5e65350bf187..fc6221462d099 100644
--- a/libraries/AP_Generator/AP_Generator_IE_FuelCell.h
+++ b/libraries/AP_Generator/AP_Generator_IE_FuelCell.h
@@ -27,7 +27,7 @@ class AP_Generator_IE_FuelCell : public AP_Generator_Backend
     void update(void) override;
 
     // Allow generator error code to pass up to frontend and export to LUA
-    int get_errorcode(void) override {return _err_code;}
+    uint32_t get_errorcode(void) override {return _err_code;}
 
 protected:
 
diff --git a/libraries/AP_Generator/AP_Generator_RichenPower.h b/libraries/AP_Generator/AP_Generator_RichenPower.h
index 2bed30975cee1..4a81c6c51968f 100644
--- a/libraries/AP_Generator/AP_Generator_RichenPower.h
+++ b/libraries/AP_Generator/AP_Generator_RichenPower.h
@@ -54,7 +54,7 @@ class AP_Generator_RichenPower : public AP_Generator_Backend
     bool healthy() const override;
     
     // Allow generator error code to pass up to fronten and export to LUA
-    int get_errorcode(void) override {return last_reading.errors;}
+    uint32_t get_errorcode(void) override {return last_reading.errors;}
 
 private:
 
diff --git a/libraries/AP_Scripting/docs/docs.lua b/libraries/AP_Scripting/docs/docs.lua
index aa88fd91b4716..fa9b12b892a1f 100644
--- a/libraries/AP_Scripting/docs/docs.lua
+++ b/libraries/AP_Scripting/docs/docs.lua
@@ -3577,5 +3577,5 @@ function visual_odom:quality() end
 generator = {}
 
 -- returns the generator error code
---- @return integer
+--- @return uint32_t_ud
 function generator:get_errorcode() end
\ No newline at end of file
diff --git a/libraries/AP_Scripting/generator/description/bindings.desc b/libraries/AP_Scripting/generator/description/bindings.desc
index 337253d314047..a73c0484abd2a 100644
--- a/libraries/AP_Scripting/generator/description/bindings.desc
+++ b/libraries/AP_Scripting/generator/description/bindings.desc
@@ -959,4 +959,4 @@ singleton AP_VisualOdom method quality int8_t
 include AP_Generator/AP_Generator.h  
 singleton AP_Generator depends HAL_GENERATOR_ENABLED
 singleton AP_Generator rename generator
-singleton AP_Generator method get_errorcode int8_t
+singleton AP_Generator method get_errorcode uint32_t