diff --git a/src/BME280.cpp b/src/BME280.cpp
index bc57c38..d3d9bf6 100644
--- a/src/BME280.cpp
+++ b/src/BME280.cpp
@@ -69,7 +69,7 @@ bool BME280::Initialize()
 
 
 /****************************************************************/
-bool BME280::InitializeFilter()
+void BME280::InitializeFilter()
 {
   // Force an unfiltered measurement to populate the filter buffer.
   // This fixes a bug that causes the first read to always be 28.82 °C 81732.34 hPa.
@@ -110,7 +110,7 @@ bool BME280::ReadChipID()
 
 
 /****************************************************************/
-bool BME280::WriteSettings()
+void BME280::WriteSettings()
 {
    uint8_t ctrlHum, ctrlMeas, config;
 
diff --git a/src/BME280.h b/src/BME280.h
index a0c3df0..247a1e5 100644
--- a/src/BME280.h
+++ b/src/BME280.h
@@ -213,7 +213,7 @@ class BME280
    ///////////////////////////////////////////////////////////////
    /// Force a unfiltered measurement to populate the filter 
    /// buffer.
-   bool InitializeFilter();
+   void InitializeFilter();
 
 
 /*****************************************************************/
@@ -296,7 +296,7 @@ class BME280
 
    /////////////////////////////////////////////////////////////////
    /// Write the settings to the chip.
-   bool WriteSettings();
+   void WriteSettings();
 
 
    /////////////////////////////////////////////////////////////////