diff --git a/plugins/custom-definesandincludes/tests/projectsgenerator.cpp b/plugins/custom-definesandincludes/tests/projectsgenerator.cpp
--- a/plugins/custom-definesandincludes/tests/projectsgenerator.cpp
+++ b/plugins/custom-definesandincludes/tests/projectsgenerator.cpp
@@ -92,11 +92,13 @@
         QTextStream stream( &file );
         stream << "[Buildset]\n" <<
         "BuildItems=@Variant(\\x00\\x00\\x00\\t\\x00\\x00\\x00\\x00\\x01\\x00\\x00\\x00\\x0b\\x00\\x00\\x00\\x00\\x01\\x00\\x00\\x00\\x1a\\x00S\\x00i\\x00m\\x00p\\x00l\\x00e\\x00P\\x00r\\x00o\\x00j\\x00e\\x00c\\x00t)\n" <<
-        "[CustomBuildSystem]\n" << "CurrentConfiguration=BuildConfig0\n" <<
         "[CustomDefinesAndIncludes][ProjectPath0]\n" <<
-        "Defines=\\x00\\x00\\x00\\x02\\x00\\x00\\x00\\x0c\\x00_\\x00D\\x00E\\x00B\\x00U\\x00G\\x00\\x00\\x00\\n\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x10\\x00V\\x00A\\x00R\\x00I\\x00A\\x00B\\x00L\\x00E\\x00\\x00\\x00\\n\\x00\\x00\\x00\\x00\\n\\x00V\\x00A\\x00L\\x00U\\x00E\n" <<
-        "Includes=\\x00\\x00\\x00\\x01\\x00\\x00\\x00$\\x00/\\x00u\\x00s\\x00r\\x00/\\x00i\\x00n\\x00c\\x00l\\x00u\\x00d\\x00e\\x00/\\x00m\\x00y\\x00d\\x00i\\x00r\n" <<
         "Path=/\n" <<
+        "[CustomDefinesAndIncludes][ProjectPath0][Defines]\n" <<
+        "_DEBUG=\n" <<
+        "VARIABLE=VALUE\n" <<
+        "[CustomDefinesAndIncludes][ProjectPath0][Includes]\n" <<
+        "1=" << QDir::rootPath() << "usr/include/mydir\n" <<
         "[Project]\n" <<
         "VersionControlSupport=\n";
     }
@@ -139,19 +141,23 @@
         QTextStream stream( &file );
         stream << "[Buildset]\n" <<
         "BuildItems=@Variant(\\x00\\x00\\x00\\t\\x00\\x00\\x00\\x00\\x01\\x00\\x00\\x00\\x0b\\x00\\x00\\x00\\x00\\x01\\x00\\x00\\x00 \\x00M\\x00u\\x00l\\x00t\\x00i\\x00P\\x00a\\x00t\\x00h\\x00P\\x00r\\x00o\\x00j\\x00e\\x00c\\x00t)\n" <<
-        "[CustomBuildSystem]\n" <<
-        "CurrentConfiguration=BuildConfig0\n" <<
         "[CustomDefinesAndIncludes][ProjectPath0]\n" <<
-        "Defines=\\x00\\x00\\x00\\x02\\x00\\x00\\x00\\n\\x00_\\x00C\\x00O\\x00P\\x00Y\\x00\\x00\\x00\\n\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x0c\\x00S\\x00O\\x00U\\x00R\\x00C\\x00E\\x00\\x00\\x00\\n\\x00\\x00\\x00\\x00\\x0e\\x00C\\x00O\\x00N\\x00T\\x00E\\x00N\\x00T\n" <<
-        "Includes=\\x00\\x00\\x00\\x01\\x00\\x00\\x00*\\x00/\\x00u\\x00s\\x00r\\x00/\\x00i\\x00n\\x00c\\x00l\\x00u\\x00d\\x00e\\x00/\\x00o\\x00t\\x00h\\x00e\\x00r\\x00d\\x00i\\x00r\n" <<
         "Path=.\n" <<
+        "[CustomDefinesAndIncludes][ProjectPath0][Defines]\n" <<
+        "SOURCE=CONTENT\n" <<
+        "_COPY=\n" <<
+        "[CustomDefinesAndIncludes][ProjectPath0][Includes]\n" <<
+        "1=" << QDir::rootPath() << "usr/include/otherdir\n" <<
         "[CustomDefinesAndIncludes][ProjectPath1]\n" <<
-        "Defines=\\x00\\x00\\x00\\x01\\x00\\x00\\x00\\n\\x00B\\x00U\\x00I\\x00L\\x00D\\x00\\x00\\x00\\n\\x00\\x00\\x00\\x00\\n\\x00d\\x00e\\x00b\\x00u\\x00g\n" <<
-        "Includes=\\x00\\x00\\x00\\x01\\x00\\x00\\x000\\x00/\\x00u\\x00s\\x00r\\x00/\\x00l\\x00o\\x00c\\x00a\\x00l\\x00/\\x00i\\x00n\\x00c\\x00l\\x00u\\x00d\\x00e\\x00/\\x00m\\x00y\\x00d\\x00i\\x00r\n" <<
         "Path=src\n" <<
+        "[CustomDefinesAndIncludes][ProjectPath1][Defines]\n" <<
+        "BUILD=debug\n" <<
+        "[CustomDefinesAndIncludes][ProjectPath1][Includes]\n" <<
+        "1=" << QDir::rootPath() << "usr/local/include/mydir\n" <<
         "[CustomDefinesAndIncludes][ProjectPath2]\n" <<
-        "Defines=\\x00\\x00\\x00\\x01\\x00\\x00\\x00\\x0c\\x00H\\x00I\\x00D\\x00D\\x00E\\x00N\\x00\\x00\\x00\\n\\x00\\x00\\x00\\x00\\x00\n" <<
         "Path=anotherFolder\n" <<
+        "[CustomDefinesAndIncludes][ProjectPath2][Defines]\n" <<
+        "HIDDEN=\n" <<
         "[Project]\n" <<
         "VersionControlSupport=\n";
     }
diff --git a/plugins/custom-definesandincludes/tests/test_definesandincludes.cpp b/plugins/custom-definesandincludes/tests/test_definesandincludes.cpp
--- a/plugins/custom-definesandincludes/tests/test_definesandincludes.cpp
+++ b/plugins/custom-definesandincludes/tests/test_definesandincludes.cpp
@@ -63,7 +63,7 @@
 
     qDebug() << actualDefines << actualIncludes;
 
-    QCOMPARE( actualIncludes, Path::List() << Path( "/usr/include/mydir") );
+    QCOMPARE( actualIncludes, Path::List() << Path( QDir::rootPath() + QStringLiteral("usr/include/mydir") ) );
 
     Defines defines;
     defines.insert( QStringLiteral("_DEBUG"), QString() );
@@ -80,7 +80,7 @@
 
     auto manager = IDefinesAndIncludesManager::manager();
     QVERIFY( manager );
-    Path::List includes = Path::List() << Path(QStringLiteral("/usr/include/otherdir"));
+    Path::List includes = Path::List() << Path( QDir::rootPath() + QStringLiteral("usr/include/otherdir") );
 
     QHash<QString,QString> defines;
     defines.insert(QStringLiteral("SOURCE"), QStringLiteral("CONTENT"));
@@ -102,7 +102,7 @@
     }
     QVERIFY(mainfile);
 
-    includes.prepend(Path(QStringLiteral("/usr/local/include/mydir")));
+    includes.prepend(Path(QDir::rootPath() + QStringLiteral("usr/local/include/mydir")));
     defines.insert(QStringLiteral("BUILD"), QStringLiteral("debug"));
     qDebug() << includes << "VS" << manager->includes( mainfile, IDefinesAndIncludesManager::UserDefined );
     qDebug() << mainfile << mainfile->path();