diff --git a/src/testlib/qtestcase.cpp b/src/testlib/qtestcase.cpp
index cd8b6edeb7b..347008fe02f 100644
--- a/src/testlib/qtestcase.cpp
+++ b/src/testlib/qtestcase.cpp
@@ -1117,6 +1117,8 @@ void TestMethods::invokeTestOnData(int index) const
     bool minimumTotalReached = false;
     do {
         QBenchmarkTestMethodData::current->beginDataRun();
+        if (i < 0)
+            QBenchmarkTestMethodData::current->iterationCount = 1;
 
         /* Benchmarking: for each accumulation iteration*/
         bool invokeOk;