diff --git a/cura/plugins/v0/point2d.proto b/cura/plugins/v0/point2d.proto
index e77cca2..283fdf5 100644
--- a/cura/plugins/v0/point2d.proto
+++ b/cura/plugins/v0/point2d.proto
@@ -3,6 +3,6 @@ syntax = "proto3";
 package cura.plugins.v0;
 
 message Point2D {
-  float x = 1;
-  float y = 2;
+  sint64 x = 1;
+  sint64 y = 2;
 }
diff --git a/cura/plugins/v0/point3d.proto b/cura/plugins/v0/point3d.proto
index 11d1869..0ff8ff8 100644
--- a/cura/plugins/v0/point3d.proto
+++ b/cura/plugins/v0/point3d.proto
@@ -3,7 +3,7 @@ syntax = "proto3";
 package cura.plugins.v0;
 
 message Point3D {
-  float x = 1;
-  float y = 2;
-  float z = 3;
+  sint64 x = 1;
+  sint64 y = 2;
+  sint64 z = 3;
 }