diff --git a/src/corelib/text/qlocale.cpp b/src/corelib/text/qlocale.cpp
index 5ff1825100e..964451491cc 100644
--- a/src/corelib/text/qlocale.cpp
+++ b/src/corelib/text/qlocale.cpp
@@ -4659,7 +4659,7 @@ bool QLocaleData::numberToCLocale(QStringView s, QLocale::NumberOptions number_o
                 return false;
             stage = Fraction;
         } else if (out == 'e') {
-            if (stage == Name)
+            if (wantDigits || stage == Name || stage > Fraction)
                 return false;
 
             if (stage < Fraction) {
diff --git a/tests/auto/corelib/text/qlocale/tst_qlocale.cpp b/tests/auto/corelib/text/qlocale/tst_qlocale.cpp
index 2cb47e52236..921498c4a3c 100644
--- a/tests/auto/corelib/text/qlocale/tst_qlocale.cpp
+++ b/tests/auto/corelib/text/qlocale/tst_qlocale.cpp
@@ -913,6 +913,9 @@ void tst_QLocale::toReal_data()
     QTest::newRow("C 1.")              << QString("C") << QString("1.")              << true  << 1.0;
     QTest::newRow("C 1.E10")           << QString("C") << QString("1.E10")           << true  << 1.0e10;
     QTest::newRow("C 1e+10")           << QString("C") << QString("1e+10")           << true  << 1.0e+10;
+    QTest::newRow("C e+10")            << QString("C") << QString("e+10")            << false << 0.0;
+    QTest::newRow("C .e+10")           << QString("C") << QString(".e+10")           << false << 0.0;
+    QTest::newRow("C 1e+2e+10")        << QString("C") << QString("1e+2e+10")        << false << 0.0;
 
     QTest::newRow("de_DE 1.")          << QString("de_DE") << QString("1.")          << false << 0.0;
     QTest::newRow("de_DE 1.2")         << QString("de_DE") << QString("1.2")         << false << 0.0;