diff --git a/src/tools/sdktool/addqtoperation.cpp b/src/tools/sdktool/addqtoperation.cpp
index 61e19855ff6..6b372b1efd9 100644
--- a/src/tools/sdktool/addqtoperation.cpp
+++ b/src/tools/sdktool/addqtoperation.cpp
@@ -252,6 +252,15 @@ void AddQtOperation::unittest()
     QCOMPARE(version1.value(QLatin1String(QMAKE)).toString(), QLatin1String("/tmp/test/qmake2"));
     QVERIFY(version1.contains(QLatin1String("extraData")));
     QCOMPARE(version1.value(QLatin1String("extraData")).toString(), QLatin1String("extraValue"));
+
+    // Docker paths
+    qtData.m_id = "testId3";
+    qtData.m_qmake = "docker://image///path/to//some/qmake";
+
+    map = qtData.addQt(map);
+    QVariantMap version2 = map.value(QLatin1String("QtVersion.2")).toMap();
+    QVERIFY(version2.contains(QLatin1String(QMAKE)));
+    QCOMPARE(version2.value(QLatin1String(QMAKE)).toString(), QLatin1String("docker://image/path/to/some/qmake"));
 }
 #endif
 
@@ -279,7 +288,7 @@ QVariantMap AddQtData::addQt(const QVariantMap &map) const
     const QString qt = QString::fromLatin1(PREFIX) + QString::number(versionCount);
 
     // Sanitize qmake path:
-    QString saneQmake = QDir::cleanPath(m_qmake);
+    const QString saneQmake = cleanPath(m_qmake);
 
     // insert data:
     KeyValuePairList data;
diff --git a/src/tools/sdktool/operation.cpp b/src/tools/sdktool/operation.cpp
index 7a81c3c7adf..d045a440d47 100644
--- a/src/tools/sdktool/operation.cpp
+++ b/src/tools/sdktool/operation.cpp
@@ -84,7 +84,7 @@ bool Operation::save(const QVariantMap &map, const QString &file) const
         return false;
     }
 
-    QString dirName = QDir::cleanPath(path + "/..");
+    QString dirName = cleanPath(path + "/..");
     QDir dir(dirName);
     if (!dir.exists() && !dir.mkpath(QLatin1String("."))) {
         std::cerr << "Error: Could not create directory " << qPrintable(dirName)
@@ -108,3 +108,12 @@ bool Operation::save(const QVariantMap &map, const QString &file) const
     }
     return true;
 }
+
+QString cleanPath(const QString &orig)
+{
+    // QDir::cleanPath() destroys "//", one of which might be needed.
+    const int pos = orig.indexOf("://");
+    if (pos == -1)
+        return QDir::cleanPath(orig);
+    return orig.left(pos) + "://" + QDir::cleanPath(orig.mid(pos + 3));
+}
diff --git a/src/tools/sdktool/operation.h b/src/tools/sdktool/operation.h
index 886ed386675..438bf302b75 100644
--- a/src/tools/sdktool/operation.h
+++ b/src/tools/sdktool/operation.h
@@ -22,6 +22,8 @@ using KeyValuePairList = QList<KeyValuePair>;
 
 QVariant valueFromString(const QString &v);
 
+QString cleanPath(const QString &orig);
+
 class Operation
 {
 public:
diff --git a/src/tools/sdktool/sdkpersistentsettings.cpp b/src/tools/sdktool/sdkpersistentsettings.cpp
index 7fda2d8d03c..b72fffa4c57 100644
--- a/src/tools/sdktool/sdkpersistentsettings.cpp
+++ b/src/tools/sdktool/sdkpersistentsettings.cpp
@@ -3,6 +3,8 @@
 
 #include "sdkpersistentsettings.h"
 
+#include "operation.h" // for cleanPath()
+
 #include <QCoreApplication>
 #include <QDataStream>
 #include <QDateTime>
@@ -826,7 +828,7 @@ void SdkPersistentSettingsWriter::setContents(const QVariantMap &data)
 
 bool SdkPersistentSettingsWriter::write(const QVariantMap &data, QString *errorString) const
 {
-    const QString parentDir = QDir::cleanPath(m_fileName + "/..");
+    const QString parentDir = cleanPath(m_fileName + "/..");
 
     const QFileInfo fi(parentDir);
     if (!(fi.exists() && fi.isDir() && fi.isWritable())) {