diff --git a/build/meta/com/google/android/update-binary b/build/meta/com/google/android/update-binary
index 7befe87..e2383a8 100644
--- a/build/meta/com/google/android/update-binary
+++ b/build/meta/com/google/android/update-binary
@@ -40,9 +40,9 @@ if [ "$SYSTEMASROOT" == "true" ]; then
   CURRENTSLOT=`getprop ro.boot.slot_suffix`
   if [ ! -z "$CURRENTSLOT" ]; then
     if [ "$CURRENTSLOT" == "_a" ]; then
-      TARGETSYSTEM=/dev/block/bootdevice/by-name/system_b
-    else
       TARGETSYSTEM=/dev/block/bootdevice/by-name/system_a
+    else
+      TARGETSYSTEM=/dev/block/bootdevice/by-name/system_b
     fi
   else
     TARGETSYSTEM=/dev/block/bootdevice/by-name/system