diff --git a/libraries/Filter/examples/Derivative/Derivative.pde b/libraries/Filter/examples/Derivative/Derivative.pde
index 8638faa508..9026e5e916 100644
--- a/libraries/Filter/examples/Derivative/Derivative.pde
+++ b/libraries/Filter/examples/Derivative/Derivative.pde
@@ -7,7 +7,6 @@
 #include <AP_Math.h>
 #include <Filter.h>
 #include <DerivativeFilter.h>
-#include <AP_Buffer.h>
 
 #ifdef DESKTOP_BUILD
 // all of this is needed to build with SITL
diff --git a/libraries/Filter/examples/Filter/Filter.pde b/libraries/Filter/examples/Filter/Filter.pde
index 662f370f3e..9fdccf6a5c 100644
--- a/libraries/Filter/examples/Filter/Filter.pde
+++ b/libraries/Filter/examples/Filter/Filter.pde
@@ -9,7 +9,6 @@
 #include <Filter.h>                     // Filter library
 #include <ModeFilter.h>         // ModeFilter class (inherits from Filter class)
 #include <AverageFilter.h>      // AverageFilter class (inherits from Filter class)
-#include <AP_Buffer.h>
 
 ////////////////////////////////////////////////////////////////////////////////
 // Serial ports
diff --git a/libraries/Filter/examples/LowPassFilter/LowPassFilter.pde b/libraries/Filter/examples/LowPassFilter/LowPassFilter.pde
index 66a18a0e2f..43738bb71a 100644
--- a/libraries/Filter/examples/LowPassFilter/LowPassFilter.pde
+++ b/libraries/Filter/examples/LowPassFilter/LowPassFilter.pde
@@ -8,7 +8,6 @@
 #include <AP_Math.h>            // ArduPilot Mega Vector/Matrix math Library
 #include <Filter.h>                     // Filter library
 #include <LowPassFilter.h>      // LowPassFilter class (inherits from Filter class)
-#include <AP_Buffer.h>
 
 ////////////////////////////////////////////////////////////////////////////////
 // Serial ports