diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
index 86abb42983a..cf597301c63 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
@@ -1039,7 +1039,7 @@ public interface MRJobConfig {
   boolean DEFAULT_FINISH_JOB_WHEN_REDUCERS_DONE = true;
 
   String MR_AM_STAGING_DIR_ERASURECODING_ENABLED =
-      MR_AM_STAGING_DIR + "erasurecoding.enabled";
+      MR_AM_STAGING_DIR + ".erasurecoding.enabled";
 
   boolean DEFAULT_MR_AM_STAGING_ERASURECODING_ENABLED = false;
 }