diff --git a/apm-dist/bin/startup.sh b/apm-dist/bin/startup.sh
index 343fda2b2..19f7af724 100644
--- a/apm-dist/bin/startup.sh
+++ b/apm-dist/bin/startup.sh
@@ -21,6 +21,6 @@ PRGDIR=`dirname "$PRG"`
 OAP_EXE=oapService.sh
 WEBAPP_EXE=webappService.sh
 
-"$PRGDIR"/"OAP_EXE"
+"$PRGDIR"/"$OAP_EXE"
 
 "$PRGDIR"/"$WEBAPP_EXE"