diff --git a/src/Logger/Logger.php b/src/Logger/Logger.php
index da76fda..32a5f4a 100644
--- a/src/Logger/Logger.php
+++ b/src/Logger/Logger.php
@@ -57,7 +57,8 @@ public function addLog(Log $log): int
         }
 
         if (! is_null($this->samplePercent)) {
-            if (rand(0, 100) <= $this->samplePercent) {
+            $rand = rand(1, 100);
+            if ($rand >= $this->samplePercent) {
                 return 0;
             }
         }
diff --git a/tests/e2e/AdapterBase.php b/tests/e2e/AdapterBase.php
index 96a5e65..beb2e10 100755
--- a/tests/e2e/AdapterBase.php
+++ b/tests/e2e/AdapterBase.php
@@ -84,6 +84,6 @@ public function testSampler(): void
 
         $zeroPercentage = ($zeroCount / count($results)) * 100;
 
-        $this->assertLessThan(20, $zeroPercentage);
+        $this->assertGreaterThan(85, $zeroPercentage);
     }
 }