diff --git a/src/plugins/autotest/gtest/gtestoutputreader.cpp b/src/plugins/autotest/gtest/gtestoutputreader.cpp
index 8dfa0c0ef41..997e7d2ddc2 100644
--- a/src/plugins/autotest/gtest/gtestoutputreader.cpp
+++ b/src/plugins/autotest/gtest/gtestoutputreader.cpp
@@ -179,7 +179,7 @@ void GTestOutputReader::processOutputLine(const QByteArray &outputLine)
         testResult->setResult(type);
         testResult->setLine(match.captured(3).toInt());
         const Utils::FilePath file = constructSourceFilePath(m_buildDir, match.captured(2));
-        if (!file.isEmpty())
+        if (file.exists())
             testResult->setFileName(file);
         testResult->setDescription(match.captured(4));
         reportResult(testResult);
@@ -247,7 +247,7 @@ void GTestOutputReader::handleDescriptionAndReportResult(TestResultPtr testResul
         testResult->setResult(ResultType::MessageLocation);
         testResult->setLine(innerMatch.captured(2).toInt());
         const Utils::FilePath file = constructSourceFilePath(m_buildDir, innerMatch.captured(1));
-        if (!file.isEmpty())
+        if (file.exists())
             testResult->setFileName(file);
         resultDescription << output;
     }
diff --git a/src/plugins/autotest/testoutputreader.cpp b/src/plugins/autotest/testoutputreader.cpp
index 403f086de5f..ada972d094a 100644
--- a/src/plugins/autotest/testoutputreader.cpp
+++ b/src/plugins/autotest/testoutputreader.cpp
@@ -39,11 +39,10 @@
 namespace Autotest {
 
 Utils::FilePath TestOutputReader::constructSourceFilePath(const Utils::FilePath &path,
-                                                          const QString &filePath)
+                                                          const QString &file)
 {
-    if (!filePath.isEmpty() && filePath.at(0) != '.')
-        return Utils::FilePath::fromFileInfo(QFileInfo(filePath));
-    return (path / filePath).canonicalPath();
+    const Utils::FilePath filePath = path.resolvePath(file);
+    return filePath.exists() ? filePath : Utils::FilePath();
 }
 
 TestOutputReader::TestOutputReader(const QFutureInterface<TestResultPtr> &futureInterface,
@@ -177,9 +176,8 @@ void TestOutputReader::checkForSanitizerOutput(const QByteArray &line)
         if (m_sanitizerOutputMode == SanitizerOutputMode::Ubsan) {
             const Utils::FilePath path = constructSourceFilePath(m_buildDir, match.captured(1));
             // path may be empty if not existing - so, provide at least what we have
-            m_sanitizerResult->setFileName(path.isEmpty()
-                                           ? Utils::FilePath::fromString(match.captured(1))
-                                           : path);
+            m_sanitizerResult->setFileName(
+                path.exists() ? path : Utils::FilePath::fromString(match.captured(1)));
             m_sanitizerResult->setLine(match.captured(2).toInt());
         }
     }