diff -rupN qt-creator-opensource-src-4.3.0-beta1/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp qt-creator-opensource-src-4.3.0-beta1-new/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp
--- qt-creator-opensource-src-4.3.0-beta1/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp	2017-03-29 17:05:59.000000000 +0200
+++ qt-creator-opensource-src-4.3.0-beta1-new/src/plugins/cmakeprojectmanager/cmakekitinformation.cpp	2017-03-31 21:37:00.198524685 +0200
@@ -309,7 +309,7 @@ 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())
             return GeneratorInfo({QString("Ninja"), extraGenerator, QString(), QString()}).toVariant();
     }