diff --git a/partitionmanager.cpp b/partitionmanager.cpp
index 0486c7a..54ce691 100644
--- a/partitionmanager.cpp
+++ b/partitionmanager.cpp
@@ -91,9 +91,11 @@
 	stop_backup.set_value(0);
 #ifdef AB_OTA_UPDATER
 	char slot_suffix[PROPERTY_VALUE_MAX];
-	property_get("ro.boot.slot_suffix", slot_suffix, "_a");
+	property_get("ro.boot.slot_suffix", slot_suffix, "error");
+	if (strcmp(slot_suffix, "error") == 0)
+		property_get("ro.boot.slot", slot_suffix, "error");
 	Active_Slot_Display = "";
-	if (strcmp(slot_suffix, "_a") == 0)
+	if (strcmp(slot_suffix, "_a") == 0 || strcmp(slot_suffix, "a") == 0)
 		Set_Active_Slot("A");
 	else
 		Set_Active_Slot("B");