diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/merge/policy/LogByteSizeMergePolicyProvider.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/merge/policy/LogByteSizeMergePolicyProvider.java
index 764cb6d60ad..2b7cd906833 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/merge/policy/LogByteSizeMergePolicyProvider.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/merge/policy/LogByteSizeMergePolicyProvider.java
@@ -44,7 +44,7 @@ public class LogByteSizeMergePolicyProvider extends AbstractIndexShardComponent
         super(store.shardId(), store.indexSettings());
         Preconditions.checkNotNull(store, "Store must be provided to merge policy");
 
-        this.minMergeSize = componentSettings.getAsBytesSize("min_merge_size", new ByteSizeValue((long) LogByteSizeMergePolicy.DEFAULT_MIN_MERGE_MB * 1024 * 1024, ByteSizeUnit.BYTES));
+        this.minMergeSize = componentSettings.getAsBytesSize("min_merge_size", new ByteSizeValue((long) (LogByteSizeMergePolicy.DEFAULT_MIN_MERGE_MB * 1024 * 1024), ByteSizeUnit.BYTES));
         this.maxMergeSize = componentSettings.getAsBytesSize("max_merge_size", new ByteSizeValue((long) LogByteSizeMergePolicy.DEFAULT_MAX_MERGE_MB, ByteSizeUnit.MB));
         this.mergeFactor = componentSettings.getAsInt("merge_factor", LogByteSizeMergePolicy.DEFAULT_MERGE_FACTOR);
         this.maxMergeDocs = componentSettings.getAsInt("max_merge_docs", LogByteSizeMergePolicy.DEFAULT_MAX_MERGE_DOCS);