diff --git a/app-android/app/src/main/java/at/bitfire/gfxtablet/CanvasView.java b/app-android/app/src/main/java/at/bitfire/gfxtablet/CanvasView.java
index 74c72d1..388e58b 100644
--- a/app-android/app/src/main/java/at/bitfire/gfxtablet/CanvasView.java
+++ b/app-android/app/src/main/java/at/bitfire/gfxtablet/CanvasView.java
@@ -124,17 +124,18 @@ public class CanvasView extends View implements SharedPreferences.OnSharedPrefer
 		return false;
 	}
 	
-	
+	// these overflow and wrap around to negative short values, but thankfully Java will continue
+	// on regardless, so we can just ignore Java's interpretation of them and send them anyway.
 	short normalizeX(float x) {
-		return (short)(Math.min(Math.max(0, x), maxX) * Short.MAX_VALUE/maxX);
+		return (short)(Math.min(Math.max(0, x), maxX) * 2*Short.MAX_VALUE/maxX);
 	}
 	
 	short normalizeY(float x) {
-		return (short)(Math.min(Math.max(0, x), maxY) * Short.MAX_VALUE/maxY);
+		return (short)(Math.min(Math.max(0, x), maxY) * 2*Short.MAX_VALUE/maxY);
 	}
 	
 	short normalizePressure(float x) {
-		return (short)(Math.min(Math.max(0, x), 2.0) * Short.MAX_VALUE/2.0);
+		return (short)(Math.min(Math.max(0, x), 2.0) * Short.MAX_VALUE);
 	}
 
 }
diff --git a/app-android/app/src/main/java/at/bitfire/gfxtablet/NetEvent.java b/app-android/app/src/main/java/at/bitfire/gfxtablet/NetEvent.java
index e8efa59..334ac89 100644
--- a/app-android/app/src/main/java/at/bitfire/gfxtablet/NetEvent.java
+++ b/app-android/app/src/main/java/at/bitfire/gfxtablet/NetEvent.java
@@ -15,7 +15,7 @@ public class NetEvent {
 		TYPE_DISCONNECT
 	}
 	static final String signature = "GfxTablet";
-	static final short protocol_version = 1;
+	static final short protocol_version = 2;
 	
 	final Type type;
 	short x, y, pressure;