diff --git a/src/gui/util/qvalidator.cpp b/src/gui/util/qvalidator.cpp
index 84f40a62269..8b0f9ac321c 100644
--- a/src/gui/util/qvalidator.cpp
+++ b/src/gui/util/qvalidator.cpp
@@ -331,12 +331,12 @@ QIntValidator::~QIntValidator()
     or is a prefix of an integer in the valid range, returns \l Intermediate.
     Otherwise, returns \l Invalid.
 
-    If the valid range consists of just positive integers (e.g., 32 to 100)
-    and \a input is a negative integer, then Invalid is returned. (On the other
-    hand, if the range consists of negative integers (e.g., -100 to -32) and
-    \a input is a positive integer, then Intermediate is returned, because
-    the user might be just about to type the minus (especially for right-to-left
-    languages).
+    If the valid range consists of just positive integers (e.g., 32 to 100) and
+    \a input is a negative integer, then Invalid is returned. (On the other
+    hand, if the range consists of negative integers (e.g., -100 to -32) and \a
+    input is a positive integer without leading plus sign, then Intermediate is
+    returned, because the user might be just about to type the minus (especially
+    for right-to-left languages).
 
     Similarly, if the valid range is between 46 and 53, then 41 and 59 will be
     evaluated as \l Intermediate, as otherwise the user wouldn't be able to
diff --git a/tests/auto/gui/util/qintvalidator/tst_qintvalidator.cpp b/tests/auto/gui/util/qintvalidator/tst_qintvalidator.cpp
index ec4e3930ece..5b0f30cf9a0 100644
--- a/tests/auto/gui/util/qintvalidator/tst_qintvalidator.cpp
+++ b/tests/auto/gui/util/qintvalidator/tst_qintvalidator.cpp
@@ -165,6 +165,7 @@ void tst_QIntValidator::validateFrench()
     QIntValidator validator(-2000, 2000, 0);
     validator.setLocale(QLocale::French);
     int i;
+    // Grouping separator is a narrow no-break space; QLocale accepts a space as it.
     QString s = QLatin1String("1 ");
     QCOMPARE(validator.validate(s, i), QValidator::Acceptable);
     validator.fixup(s);