fix typos
diff --git a/server/src/assembly/resources/sbin/start-server.sh b/server/src/assembly/resources/sbin/start-server.sh
index 450f4b2..0890083 100755
--- a/server/src/assembly/resources/sbin/start-server.sh
+++ b/server/src/assembly/resources/sbin/start-server.sh
@@ -37,8 +37,8 @@
         fi
     done
 # ...otherwise, source the specified include.
-elif [ -r "$CASSANDRA_INCLUDE" ]; then
-    . "$CASSANDRA_INCLUDE"
+elif [ -r "$IOTDB_INCLUDE" ]; then
+    . "$IOTDB_INCLUDE"
 fi