diff --git a/src/unit/unit_ADS1115.hpp b/src/unit/unit_ADS1115.hpp
index 5387bd6..61f3dc0 100644
--- a/src/unit/unit_ADS1115.hpp
+++ b/src/unit/unit_ADS1115.hpp
@@ -73,8 +73,8 @@ class UnitAVmeterBase : public UnitADS1115 {
     virtual ~UnitAVmeterBase() {
     }
 
-    virtual bool begin();
-    
+    virtual bool begin() override;
+
     inline float calibrationFactor() const {
         return _calibrationFactor;
     }
diff --git a/src/unit/unit_ADS111x.hpp b/src/unit/unit_ADS111x.hpp
index 6f6c59c..b57795b 100644
--- a/src/unit/unit_ADS111x.hpp
+++ b/src/unit/unit_ADS111x.hpp
@@ -245,7 +245,7 @@ class UnitADS111x : public Component, public PeriodicMeasurementAdapter<UnitADS1
     ///@name Properties
     ///@{
     /*!
-      @breif Coefficient value
+      @brief Coefficient value
       @note Changes as gain changes
     */
     inline float coefficient() const {
@@ -272,7 +272,7 @@ class UnitADS111x : public Component, public PeriodicMeasurementAdapter<UnitADS1
     }
     /*!
       @brief Start periodic measurement
-      @paraa rate Sampling rate
+      @param rate Sampling rate
       @param mux Input multiplexer (Not supported in some classes)
       @param gain Programmable gain amplifier (Not supported in some classes)
       @param comp_que Comparator queue (Not supported in some classes)