diff --git a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/vectors/VectorsFeatureSetUsage.java b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/vectors/VectorsFeatureSetUsage.java
index a5eb5409f21af..62568fa957dfe 100644
--- a/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/vectors/VectorsFeatureSetUsage.java
+++ b/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/vectors/VectorsFeatureSetUsage.java
@@ -37,7 +37,7 @@ public void writeTo(StreamOutput out) throws IOException {
         out.writeVInt(numDenseVectorFields);
         // Older versions recorded the number of sparse vector fields.
         if (out.getVersion().before(Version.V_8_0_0)) {
-            out.writeInt(0);
+            out.writeVInt(0);
         }
         out.writeVInt(avgDenseVectorDims);
     }
diff --git a/x-pack/qa/rolling-upgrade/src/test/resources/rest-api-spec/test/mixed_cluster/100_analytics_usage.yml b/x-pack/qa/rolling-upgrade/src/test/resources/rest-api-spec/test/mixed_cluster/100_analytics_usage.yml
index f0fb80fcc8dcd..f0aafeccf5ca4 100644
--- a/x-pack/qa/rolling-upgrade/src/test/resources/rest-api-spec/test/mixed_cluster/100_analytics_usage.yml
+++ b/x-pack/qa/rolling-upgrade/src/test/resources/rest-api-spec/test/mixed_cluster/100_analytics_usage.yml
@@ -19,8 +19,8 @@ setup:
 ---
 "Basic test for usage stats on analytics indices":
   - skip:
-      version: "all"
-      reason: "AwaitsFix https://github.com/elastic/elasticsearch/issues/55378"
+      version: " - 7.7.99"
+      reason:  "stats are not working in earlier versions"
   - do:
       xpack.info: {}
   - match: { features.analytics.available: true }