diff --git a/src/plugins/android/androiddeployqtstep.cpp b/src/plugins/android/androiddeployqtstep.cpp
index cacb2f37d9e..cc078ec410d 100644
--- a/src/plugins/android/androiddeployqtstep.cpp
+++ b/src/plugins/android/androiddeployqtstep.cpp
@@ -528,7 +528,7 @@ QAbstractItemModel *AndroidDeployQtStep::keystoreCertificates()
             return 0;
         params << m_keystorePasswd;
         Utils::Environment env = Utils::Environment::systemEnvironment();
-        env.set(QLatin1String("LANG"), QLatin1String("C"));
+        env.set(QLatin1String("LC_ALL"), QLatin1String("C"));
         keytoolProc.setProcessEnvironment(env.toProcessEnvironment());
         keytoolProc.start(AndroidConfigurations::currentConfig().keytoolPath().toString(), params);
         if (!keytoolProc.waitForStarted() || !keytoolProc.waitForFinished()) {
diff --git a/src/plugins/android/androidpackagecreationstep.cpp b/src/plugins/android/androidpackagecreationstep.cpp
index e0ead603ffa..f36301ebff9 100644
--- a/src/plugins/android/androidpackagecreationstep.cpp
+++ b/src/plugins/android/androidpackagecreationstep.cpp
@@ -365,7 +365,7 @@ QAbstractItemModel *AndroidPackageCreationStep::keystoreCertificates()
             return 0;
         params << m_keystorePasswd;
         Utils::Environment env = Utils::Environment::systemEnvironment();
-        env.set(QLatin1String("LANG"), QLatin1String("C"));
+        env.set(QLatin1String("LC_ALL"), QLatin1String("C"));
         keytoolProc.setProcessEnvironment(env.toProcessEnvironment());
         keytoolProc.start(AndroidConfigurations::currentConfig().keytoolPath().toString(), params);
         if (!keytoolProc.waitForStarted() || !keytoolProc.waitForFinished()) {