diff --git a/src/Logging/LogInterpreter.php b/src/Logging/LogInterpreter.php
index 0c5a6651..d210e039 100644
--- a/src/Logging/LogInterpreter.php
+++ b/src/Logging/LogInterpreter.php
@@ -88,7 +88,9 @@ public function mergeReaders(): TestSuite
             $this->mergeSuites($mainSuite, $otherSuite);
         }
 
-        assert($mainSuite !== null);
+        if ($mainSuite === null) {
+            return new TestSuite('', 0, 0, 0, 0, 0, 0, 0, 0.0, '', [], []);
+        }
 
         return $mainSuite;
     }
diff --git a/src/Runners/PHPUnit/ExecutableTest.php b/src/Runners/PHPUnit/ExecutableTest.php
index 38e99dba..14031b17 100644
--- a/src/Runners/PHPUnit/ExecutableTest.php
+++ b/src/Runners/PHPUnit/ExecutableTest.php
@@ -101,7 +101,7 @@ private function unlinkTempFile(?string &$tempName): void
         $tempName = null;
     }
 
-  /**
+    /**
      * Returns the path to this test's JUnit temp file.
      * If the temp file does not exist, it will be
      * created.
@@ -121,7 +121,7 @@ final public function deleteTempFiles(): void
         $this->unlinkTempFile($this->coverageFileName);
     }
 
-  /**
+    /**
      * Return the last process command.
      */
     final public function getLastCommand(): string