diff --git a/src/libs/utils/qtcprocess.cpp b/src/libs/utils/qtcprocess.cpp
index cb7f21512ef..4799e8adbd0 100644
--- a/src/libs/utils/qtcprocess.cpp
+++ b/src/libs/utils/qtcprocess.cpp
@@ -1761,12 +1761,6 @@ void Process::setStdOutCodec(QTextCodec *c)
     d->m_stdOutCodec = c;
 }
 
-void Process::setStdErrCodec(QTextCodec *c)
-{
-    QTC_ASSERT(c, return);
-    d->m_stdErrCodec = c;
-}
-
 void Process::setTimeOutMessageBoxEnabled(bool v)
 {
     d->m_timeOutMessageBoxEnabled = v;
diff --git a/src/libs/utils/qtcprocess.h b/src/libs/utils/qtcprocess.h
index 1de06a359b4..bf79f774c88 100644
--- a/src/libs/utils/qtcprocess.h
+++ b/src/libs/utils/qtcprocess.h
@@ -144,8 +144,7 @@ public:
                      EventLoopMode eventLoopMode = EventLoopMode::Off);
 
     void setCodec(QTextCodec *c); // for stdOut and stdErr
-    void setStdOutCodec(QTextCodec *c);
-    void setStdErrCodec(QTextCodec *c);
+    void setStdOutCodec(QTextCodec *c); // for stdOut, stdErr uses executable.processStdErrCodec()
 
     void setTimeOutMessageBoxEnabled(bool);
 
diff --git a/src/plugins/coreplugin/locator/executefilter.cpp b/src/plugins/coreplugin/locator/executefilter.cpp
index 863ed8834dd..cada4a6d45d 100644
--- a/src/plugins/coreplugin/locator/executefilter.cpp
+++ b/src/plugins/coreplugin/locator/executefilter.cpp
@@ -17,7 +17,6 @@
 #include <QJsonArray>
 #include <QJsonObject>
 #include <QMessageBox>
-#include <QTextCodec>
 
 using namespace Tasking;
 using namespace Utils;
@@ -160,7 +159,6 @@ void ExecuteFilter::createProcess()
 
     m_process = new Process;
     m_process->setEnvironment(Environment::systemEnvironment());
-    m_process->setCodec(QTextCodec::codecForLocale());
     connect(m_process, &Process::done, this, &ExecuteFilter::done);
     connect(m_process, &Process::readyReadStandardOutput, this, &ExecuteFilter::readStdOutput);
     connect(m_process, &Process::readyReadStandardError, this, &ExecuteFilter::readStdError);
diff --git a/src/plugins/projectexplorer/abstractprocessstep.cpp b/src/plugins/projectexplorer/abstractprocessstep.cpp
index 4f3dc2ffba0..765b4eb877a 100644
--- a/src/plugins/projectexplorer/abstractprocessstep.cpp
+++ b/src/plugins/projectexplorer/abstractprocessstep.cpp
@@ -194,9 +194,8 @@ bool AbstractProcessStep::setupProcess(Process &process)
     if (d->m_lowPriority && projectExplorerSettings().lowBuildPriority)
         process.setLowPriority();
 
-    process.setStdOutCodec(buildEnvironment().hasKey("VSLANG")
-                               ? QTextCodec::codecForName("UTF-8") : QTextCodec::codecForLocale());
-    process.setStdErrCodec(QTextCodec::codecForLocale());
+    if (buildEnvironment().hasKey("VSLANG"))
+        process.setStdOutCodec(QTextCodec::codecForName("UTF-8"));
 
     process.setStdOutCallback([this](const QString &s){
         emit addOutput(s, OutputFormat::Stdout, DontAppendNewline);
diff --git a/src/plugins/remotelinux/genericdirectuploadstep.cpp b/src/plugins/remotelinux/genericdirectuploadstep.cpp
index 37cb75df065..25eb72ca905 100644
--- a/src/plugins/remotelinux/genericdirectuploadstep.cpp
+++ b/src/plugins/remotelinux/genericdirectuploadstep.cpp
@@ -137,7 +137,6 @@ GroupItem GenericDirectUploadStep::statTask(UploadStorage *storage,
                                             StatEndHandler statEndHandler)
 {
     const auto onSetup = [this, file](Process &process) {
-        process.setCodec(QTextCodec::codecForName("UTF-8"));
         // We'd like to use --format=%Y, but it's not supported by busybox.
         process.setCommand({deviceConfiguration()->filePath("stat"),
                             {"-t", Utils::ProcessArgs::quoteArgUnix(file.remoteFilePath())}});