diff --git a/src/testlib/qbenchmark.cpp b/src/testlib/qbenchmark.cpp
index 4a8bd72ee9..af6ee5f7c6 100644
--- a/src/testlib/qbenchmark.cpp
+++ b/src/testlib/qbenchmark.cpp
@@ -167,7 +167,7 @@ QTest::QBenchmarkIterationController::~QBenchmarkIterationController()
 
 /*! \internal
 */
-bool QTest::QBenchmarkIterationController::isDone()
+bool QTest::QBenchmarkIterationController::isDone() const noexcept
 {
     if (QBenchmarkTestMethodData::current->runOnce)
         return i > 0;
@@ -176,14 +176,14 @@ bool QTest::QBenchmarkIterationController::isDone()
 
 /*! \internal
 */
-void QTest::QBenchmarkIterationController::next()
+void QTest::QBenchmarkIterationController::next() noexcept
 {
     ++i;
 }
 
 /*! \internal
 */
-int QTest::iterationCount()
+int QTest::iterationCount() noexcept
 {
     return QBenchmarkTestMethodData::current->iterationCount;
 }
diff --git a/src/testlib/qbenchmark.h b/src/testlib/qbenchmark.h
index 20c643b2c6..d0e8c78567 100644
--- a/src/testlib/qbenchmark.h
+++ b/src/testlib/qbenchmark.h
@@ -28,8 +28,8 @@ public:
     QBenchmarkIterationController();
     QBenchmarkIterationController(RunMode runMode);
     ~QBenchmarkIterationController();
-    bool isDone();
-    void next();
+    bool isDone() const noexcept;
+    void next() noexcept;
     int i;
 };
 
diff --git a/src/testlib/qbenchmark_p.h b/src/testlib/qbenchmark_p.h
index 09379aac0f..902b092b16 100644
--- a/src/testlib/qbenchmark_p.h
+++ b/src/testlib/qbenchmark_p.h
@@ -149,7 +149,7 @@ public:
 // low-level API:
 namespace QTest
 {
-    int iterationCount();
+    int iterationCount() noexcept;
     void setIterationCountHint(int count);
     void setIterationCount(int count);