diff --git a/testinstall/ksamu b/testinstall/ksamu
index 5025d0ab1..2f44295c0 100644
--- a/testinstall/ksamu
+++ b/testinstall/ksamu
@@ -37,6 +37,6 @@ background_task() {
 }
 
 background_task &
-BG_PID=$!
-export BG_PID
+WH_BG_PID=$!
+export WH_BG_PID
 ' >> "$DRIVE_C/KSAMU/KSAMU.exe.whdb"