diff --git a/library.properties b/library.properties
index 5561c25..500a9da 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=pimoroniTrackball
-version=0.1.0
+version=0.1.1
 author=Nick Reynolds
 maintainer=Nick Reynolds <ncmreynolds+pimoronitrackball@googlemail.com>
 sentence=Connect the Pimoroni RGBW trackball breakout to a microcontroller.
diff --git a/src/pimoroniTrackball.cpp b/src/pimoroniTrackball.cpp
index 7bfb4d3..085b734 100644
--- a/src/pimoroniTrackball.cpp
+++ b/src/pimoroniTrackball.cpp
@@ -151,7 +151,7 @@ bool pimoroniTrackball::click()
 {
 	if(_lastState[4] == 0b10000001)
 	{
-		_lastState[4] == 0b10000000;
+		_lastState[4] = 0b10000000;
 		return(true);
 	}
 	return(false);
@@ -160,7 +160,7 @@ bool pimoroniTrackball::release()
 {
 	if(_lastState[4] == 0b00000001)
 	{
-		_lastState[4] == 0b00000000;
+		_lastState[4] = 0b00000000;
 		return(true);
 	}
 	return(false);