diff -rupN qt-creator-opensource-src-4.0.0-beta1/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp qt-creator-opensource-src-4.0.0-beta1-new/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp

--- qt-creator-opensource-src-4.0.0-beta1/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp	2016-03-22 15:59:58.000000000 +0100

+++ qt-creator-opensource-src-4.0.0-beta1-new/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp	2016-03-24 13:41:44.234683235 +0100

@@ -172,7 +172,7 @@ QVariant CMakeGeneratorKitInformation::d

     if (it != known.constEnd()) {

         Utils::Environment env = Utils::Environment::systemEnvironment();

         k->addToEnvironment(env);

-        const Utils::FileName ninjaExec = env.searchInPath(QLatin1String("ninja"));

+        const Utils::FileName ninjaExec = env.searchInPath(QLatin1String("ninja-build"));

         if (ninjaExec.isEmpty())

             it = known.constEnd(); // Ignore ninja generator without ninja exectuable

     }