diff --git a/src/widgets/dialogs/qfiledialog.cpp b/src/widgets/dialogs/qfiledialog.cpp
index 14624bb68b..1d792fd89e 100644
--- a/src/widgets/dialogs/qfiledialog.cpp
+++ b/src/widgets/dialogs/qfiledialog.cpp
@@ -1021,7 +1021,7 @@ static inline bool isCaseSensitiveFileSystem(const QString &path)
     // file system mounted, wrongly capitalized drive letters will cause mismatches.
     return false;
 #elif defined(Q_OS_MACOS)
-    return pathconf(QFile::encodeName(path).constData(), _PC_CASE_SENSITIVE);
+    return pathconf(QFile::encodeName(path).constData(), _PC_CASE_SENSITIVE) == 1;
 #else
     return true;
 #endif
diff --git a/tests/auto/corelib/io/qfile/tst_qfile.cpp b/tests/auto/corelib/io/qfile/tst_qfile.cpp
index 2748df5e7b..09d6c9ec0f 100644
--- a/tests/auto/corelib/io/qfile/tst_qfile.cpp
+++ b/tests/auto/corelib/io/qfile/tst_qfile.cpp
@@ -3792,7 +3792,7 @@ void tst_QFile::caseSensitivity()
 #if defined(Q_OS_WIN)
     const bool caseSensitive = false;
 #elif defined(Q_OS_DARWIN)
-     const bool caseSensitive = pathconf(QDir::currentPath().toLatin1().constData(), _PC_CASE_SENSITIVE);
+     const bool caseSensitive = pathconf(QDir::currentPath().toLatin1().constData(), _PC_CASE_SENSITIVE) == 1;
 #else
     const bool caseSensitive = true;
 #endif
diff --git a/tests/auto/corelib/io/qfileinfo/tst_qfileinfo.cpp b/tests/auto/corelib/io/qfileinfo/tst_qfileinfo.cpp
index 7b31e2789b..e0cd361fdb 100644
--- a/tests/auto/corelib/io/qfileinfo/tst_qfileinfo.cpp
+++ b/tests/auto/corelib/io/qfileinfo/tst_qfileinfo.cpp
@@ -1027,7 +1027,7 @@ void tst_QFileInfo::compare_data()
 #if defined(Q_OS_WIN)
         << true;
 #elif defined(Q_OS_DARWIN)
-        << !pathconf(QDir::currentPath().toLatin1().constData(), _PC_CASE_SENSITIVE);
+        << (pathconf(QDir::currentPath().toLatin1().constData(), _PC_CASE_SENSITIVE) != 1);
 #else
         << false;
 #endif
diff --git a/tests/auto/corelib/io/qsettings/tst_qsettings.cpp b/tests/auto/corelib/io/qsettings/tst_qsettings.cpp
index 6952f14f19..93774b5157 100644
--- a/tests/auto/corelib/io/qsettings/tst_qsettings.cpp
+++ b/tests/auto/corelib/io/qsettings/tst_qsettings.cpp
@@ -547,7 +547,7 @@ void tst_QSettings::ctor()
             // more details in QMacSettingsPrivate::QMacSettingsPrivate(), organization was comify()-ed
             caseSensitive = settings5.fileName().contains("SoftWare.ORG");
         } else {
-            caseSensitive = pathconf(settings5.fileName().toLatin1().constData(), _PC_CASE_SENSITIVE);
+            caseSensitive = pathconf(settings5.fileName().toLatin1().constData(), _PC_CASE_SENSITIVE) == 1;
         }
 #elif defined(Q_OS_WIN32)
         caseSensitive = false;
diff --git a/tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp b/tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp
index 87d5e97b10..2ce4a956fa 100644
--- a/tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp
+++ b/tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp
@@ -53,7 +53,7 @@ static inline bool isCaseSensitiveFileSystem(const QString &path)
 {
     Q_UNUSED(path);
 #if defined(Q_OS_MAC)
-    return pathconf(QFile::encodeName(path).constData(), _PC_CASE_SENSITIVE);
+    return pathconf(QFile::encodeName(path).constData(), _PC_CASE_SENSITIVE) == 1;
 #elif defined(Q_OS_WIN)
     return false;
 #else