diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackDescription.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackDescription.java
index 62fce3b73..9cb29af5d 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackDescription.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackDescription.java
@@ -168,13 +168,6 @@ public class DfsPackDescription implements Comparable<DfsPackDescription> {
 		return size == null ? 0 : size.longValue();
 	}
 
-	/**
-	 * @return size of the reverse index, in bytes.
-	 */
-	public int getReverseIndexSize() {
-		return (int) Math.min(objectCount * 8, Integer.MAX_VALUE);
-	}
-
 	/** @return number of objects in the pack. */
 	public long getObjectCount() {
 		return objectCount;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackFile.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackFile.java
index 8a4bd2e53..4c41557e5 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackFile.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsPackFile.java
@@ -283,9 +283,11 @@ public final class DfsPackFile {
 					return revidx;
 			}
 
-			PackReverseIndex revidx = new PackReverseIndex(idx(ctx));
-			reverseIndex = cache.put(key, POS_REVERSE_INDEX,
-					packDesc.getReverseIndexSize(), revidx);
+			PackIndex idx = idx(ctx);
+			PackReverseIndex revidx = new PackReverseIndex(idx);
+			int sz = (int) Math.min(
+					idx.getObjectCount() * 8, Integer.MAX_VALUE);
+			reverseIndex = cache.put(key, POS_REVERSE_INDEX, sz, revidx);
 			return revidx;
 		}
 	}