diff --git a/partition.cpp b/partition.cpp
index 06084b6..0644fba 100644
--- a/partition.cpp
+++ b/partition.cpp
@@ -1350,7 +1350,7 @@
 		Is_Present = true;
 		Actual_Block_Device = Primary_Block_Device;
 	} else if (!Alternate_Block_Device.empty() && TWFunc::Path_Exists(Alternate_Block_Device)) {
-		Actual_Block_Device = Primary_Block_Device;
+		Actual_Block_Device = Alternate_Block_Device;
 		Is_Present = true;
 	} else
 		Is_Present = false;