diff --git a/build.rs b/build.rs
index b27a318..39e2b47 100644
--- a/build.rs
+++ b/build.rs
@@ -198,7 +198,7 @@ fn write_sim_data() {
 
     generate_sim_data::<AnnotationReading>(&[&annotation_input], &annotation_output, 0);
     generate_sim_data::<GPSReading>(&[&gps_input], &gps_output, 0);
-    generate_sim_data::<IMUReading>(&[&accel_input, &gyro_input], &motion_output, 2);
+    generate_sim_data::<IMUReading>(&[&accel_input, &gyro_input], &motion_output, 3);
 
     let mut unified_fd = File::create(unified_output.clone()).unwrap();
 
diff --git a/partitions.csv b/partitions.csv
index 09a34b6..61679d7 100644
--- a/partitions.csv
+++ b/partitions.csv
@@ -4,4 +4,4 @@
 nvs,      data, nvs,     ,        0x6000,
 phy_init, data, phy,     ,        0x1000,
 factory,  app,  factory, ,        2M,
-sim,      data, undefined,,       6M,
+sim,      data, undefined,,       5000K,