diff --git a/libraries/AP_Generator/AP_Generator.h b/libraries/AP_Generator/AP_Generator.h
index a6c7643c25..b0c02be444 100644
--- a/libraries/AP_Generator/AP_Generator.h
+++ b/libraries/AP_Generator/AP_Generator.h
@@ -42,14 +42,14 @@ public:
     // Helpers to retrieve measurements
     float get_voltage(void) const { return _voltage; }
     float get_current(void) const { return _current; }
-    float get_fuel_remain(void) const { return _fuel_remain_pct; }
+    float get_fuel_remaining_pct(void) const { return _fuel_remain_pct; }
     float get_batt_consumed(void) const { return _consumed_mah; }
     uint16_t get_rpm(void) const { return _rpm; }
 
     // Helpers to see if backend has a measurement
     bool has_current() const { return _has_current; }
     bool has_consumed_energy() const { return _has_consumed_energy; }
-    bool has_fuel_remaining() const { return _has_fuel_remaining; }
+    bool has_fuel_remaining_pct() const { return _has_fuel_remaining_pct; }
 
     // healthy() returns true if the generator is not present, or it is
     // present, providing telemetry and not indicating any errors.
@@ -103,7 +103,7 @@ private:
     bool _healthy;
     bool _has_current;
     bool _has_consumed_energy;
-    bool _has_fuel_remaining;
+    bool _has_fuel_remaining_pct;
 
     static AP_Generator *_singleton;
 
diff --git a/libraries/AP_Generator/AP_Generator_IE_2400.cpp b/libraries/AP_Generator/AP_Generator_IE_2400.cpp
index e95a9009ea..8124d15559 100644
--- a/libraries/AP_Generator/AP_Generator_IE_2400.cpp
+++ b/libraries/AP_Generator/AP_Generator_IE_2400.cpp
@@ -29,7 +29,7 @@ void AP_Generator_IE_2400::init()
     // Tell frontend what measurements are available for this generator
     _frontend._has_current = true;
     _frontend._has_consumed_energy = true;
-    _frontend._has_fuel_remaining = true;
+    _frontend._has_fuel_remaining_pct = true;
 }
 
 // Update fuel cell, expected to be called at 20hz
diff --git a/libraries/AP_Generator/AP_Generator_IE_650_800.cpp b/libraries/AP_Generator/AP_Generator_IE_650_800.cpp
index dda28f1950..f1ccaa571a 100644
--- a/libraries/AP_Generator/AP_Generator_IE_650_800.cpp
+++ b/libraries/AP_Generator/AP_Generator_IE_650_800.cpp
@@ -28,7 +28,7 @@ void AP_Generator_IE_650_800::init()
     // This unit does not have current but this needs to be true to make use of consumed_mah in BattMonitor
     _frontend._has_current = true;
     _frontend._has_consumed_energy = true;
-    _frontend._has_fuel_remaining = false;
+    _frontend._has_fuel_remaining_pct = false;
 }
 
 // Update fuel cell, expected to be called at 20hz
diff --git a/libraries/AP_Generator/AP_Generator_RichenPower.cpp b/libraries/AP_Generator/AP_Generator_RichenPower.cpp
index 129cbc2e5b..ae542e2ea8 100644
--- a/libraries/AP_Generator/AP_Generator_RichenPower.cpp
+++ b/libraries/AP_Generator/AP_Generator_RichenPower.cpp
@@ -41,7 +41,7 @@ void AP_Generator_RichenPower::init()
     // Tell frontend what measurements are available for this generator
     _frontend._has_current = true;
     _frontend._has_consumed_energy = false;
-    _frontend._has_fuel_remaining = false;
+    _frontend._has_fuel_remaining_pct = false;
 }
 
 // find a RichenPower message in the buffer, starting at