diff --git a/dd-java-agent/agent-tooling/src/test/groovy/datadog/trace/agent/tooling/CacheProviderTest.groovy b/dd-java-agent/agent-tooling/src/test/groovy/datadog/trace/agent/tooling/CacheProviderTest.groovy
index 354069acea..111763d098 100644
--- a/dd-java-agent/agent-tooling/src/test/groovy/datadog/trace/agent/tooling/CacheProviderTest.groovy
+++ b/dd-java-agent/agent-tooling/src/test/groovy/datadog/trace/agent/tooling/CacheProviderTest.groovy
@@ -185,7 +185,7 @@ class CacheProviderTest extends DDSpecification {
 
     then:
     // cache will start to proactively free slots & size calc is approximate
-    poolStrat.approximateSize() > capacity - 4
+    poolStrat.approximateSize() > 0.9 * capacity
 
     when:
     10.times {