diff --git a/app/src/main/res/layout/activity_manual_drive.xml b/app/src/main/res/layout/activity_manual_drive.xml
index 7315dda..97de504 100644
--- a/app/src/main/res/layout/activity_manual_drive.xml
+++ b/app/src/main/res/layout/activity_manual_drive.xml
@@ -343,7 +343,7 @@
         android:textOff="Start"
         android:textOn="Stopp"
         app:layout_constraintEnd_toEndOf="@+id/sp1_control_button"
-        app:layout_constraintHorizontal_bias="0.68"
+        app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintStart_toStartOf="@+id/sp1_control_button"
         app:layout_constraintTop_toBottomOf="@+id/sp1_control_button" />
 
@@ -392,7 +392,7 @@
         android:textOff="Start"
         android:textOn="Stopp"
         app:layout_constraintEnd_toEndOf="@+id/b1_control_button"
-        app:layout_constraintHorizontal_bias="0.68"
+        app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintStart_toStartOf="@+id/b1_control_button"
         app:layout_constraintTop_toBottomOf="@+id/b1_control_button" />