diff --git a/qmlprofiler.pro b/qmlprofiler.pro
index 55ba4afb4f3..70c98b4a86c 100644
--- a/qmlprofiler.pro
+++ b/qmlprofiler.pro
@@ -4,3 +4,5 @@ CONFIG += ordered
 SUBDIRS += libs/qmldebug \
   plugins/qmlprofiler \
   plugins/qmlprofilerextended
+
+QMAKE_EXTRA_TARGETS = docs install_docs # dummy targets for consistency
diff --git a/qtcreatorlibrary.pri b/qtcreatorlibrary.pri
index 9e525ccfdf2..aa11abf7005 100644
--- a/qtcreatorlibrary.pri
+++ b/qtcreatorlibrary.pri
@@ -1,7 +1,7 @@
-IDE_SOURCE_TREE=$$(IDE_SOURCE_TREE)
-IDE_BUILD_TREE=$$(IDE_BUILD_TREE)
+IDE_SOURCE_TREE=$$(QTC_SOURCE)
+IDE_BUILD_TREE=$$(QTC_BUILD)
 
-isEmpty(IDE_SOURCE_TREE):error(Set IDE_SOURCE_TREE environment variable)
-isEmpty(IDE_BUILD_TREE):error(Set IDE_BUILD_TREE environment variable)
+isEmpty(IDE_SOURCE_TREE):error(Set QTC_SOURCE environment variable)
+isEmpty(IDE_BUILD_TREE):error(Set QTC_BUILD environment variable)
 
 include($$IDE_SOURCE_TREE/src/qtcreatorlibrary.pri)
diff --git a/qtcreatorplugin.pri b/qtcreatorplugin.pri
index 3044256f794..e0ee55580ed 100644
--- a/qtcreatorplugin.pri
+++ b/qtcreatorplugin.pri
@@ -1,8 +1,8 @@
-IDE_SOURCE_TREE=$$(IDE_SOURCE_TREE)
-IDE_BUILD_TREE=$$(IDE_BUILD_TREE)
+IDE_SOURCE_TREE=$$(QTC_SOURCE)
+IDE_BUILD_TREE=$$(QTC_BUILD)
 
-isEmpty(IDE_SOURCE_TREE):error(Set IDE_SOURCE_TREE environment variable)
-isEmpty(IDE_BUILD_TREE):error(Set IDE_BUILD_TREE environment variable)
+isEmpty(IDE_SOURCE_TREE):error(Set QTC_SOURCE environment variable)
+isEmpty(IDE_BUILD_TREE):error(Set QTC_BUILD environment variable)
 
 INCLUDEPATH+=$$PWD/libs $$PWD/plugins
 include($$IDE_SOURCE_TREE/src/qtcreatorplugin.pri)