diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestProcedurePriority.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestProcedurePriority.java
index 9f5741c929d..7386b2f05ad 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestProcedurePriority.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestProcedurePriority.java
@@ -136,6 +136,8 @@ public class TestProcedurePriority {
       .stream().filter(t -> !t.getRegionServer().getRegions(TableName.META_TABLE_NAME).isEmpty())
       .findAny().get();
     HRegionServer rsNoMeta = UTIL.getOtherRegionServer(rsWithMetaThread.getRegionServer());
+    // wait for NS table initialization to avoid our error inject affecting master initialization
+    UTIL.waitTableAvailable(TableName.NAMESPACE_TABLE_NAME);
     FAIL = true;
     UTIL.getMiniHBaseCluster().killRegionServer(rsNoMeta.getServerName());
     // wait until all the worker thread are stuck, which means that the stuck checker will start to