diff --git a/src/libs/utils/environment.cpp b/src/libs/utils/environment.cpp
index 03eb5c72a77..220efbef157 100644
--- a/src/libs/utils/environment.cpp
+++ b/src/libs/utils/environment.cpp
@@ -383,6 +383,11 @@ bool Environment::hasKey(const QString &key)
     return m_values.contains(key);
 }
 
+QString Environment::userName() const
+{
+    return value(QLatin1String(HostOsInfo::isWindowsHost() ? "USERNAME" : "USER"));
+}
+
 bool Environment::operator!=(const Environment &other) const
 {
     return !(*this == other);
diff --git a/src/libs/utils/environment.h b/src/libs/utils/environment.h
index ff491c264b1..423e4be404c 100644
--- a/src/libs/utils/environment.h
+++ b/src/libs/utils/environment.h
@@ -79,6 +79,8 @@ public:
     QList<EnvironmentItem> diff(const Environment &other) const;
     bool hasKey(const QString &key);
 
+    QString userName() const;
+
     void appendOrSet(const QString &key, const QString &value, const QString &sep = QString());
     void prependOrSet(const QString &key, const QString &value, const QString &sep = QString());
 
diff --git a/src/plugins/cpaster/settings.cpp b/src/plugins/cpaster/settings.cpp
index d943147a8c7..aeacddf1c9c 100644
--- a/src/plugins/cpaster/settings.cpp
+++ b/src/plugins/cpaster/settings.cpp
@@ -31,7 +31,7 @@
 #include "settings.h"
 #include "pastebindotcomprotocol.h"
 
-#include <utils/hostosinfo.h>
+#include <utils/environment.h>
 
 #include <QVariant>
 #include <QSettings>
@@ -67,8 +67,7 @@ void Settings::toSettings(QSettings *settings) const
 void Settings::fromSettings(const QSettings *settings)
 {
     const QString rootKey = QLatin1String(groupC) + QLatin1Char('/');
-    const char * const envKey = Utils::HostOsInfo::isWindowsHost() ? "USERNAME" : "USER";
-    const QString defaultUser = QString::fromLocal8Bit(qgetenv(envKey));
+    const QString defaultUser = Utils::Environment::systemEnvironment().userName();
     username = settings->value(rootKey + QLatin1String(userNameKeyC), defaultUser).toString();
     protocol = settings->value(rootKey + QLatin1String(defaultProtocolKeyC), PasteBinDotComProtocol::protocolName()).toString();
     copyToClipboard = settings->value(rootKey + QLatin1String(copyToClipboardKeyC), true).toBool();
diff --git a/src/plugins/cpptools/cppfilesettingspage.cpp b/src/plugins/cpptools/cppfilesettingspage.cpp
index 2f11b68387d..8113955154b 100644
--- a/src/plugins/cpptools/cppfilesettingspage.cpp
+++ b/src/plugins/cpptools/cppfilesettingspage.cpp
@@ -39,7 +39,7 @@
 
 #include <extensionsystem/pluginmanager.h>
 
-#include <utils/hostosinfo.h>
+#include <utils/environment.h>
 #include <utils/fileutils.h>
 
 #include <QSettings>
@@ -151,8 +151,7 @@ static bool keyWordReplacement(const QString &keyWord,
         return true;
     }
     if (keyWord == QLatin1String("%USER%")) {
-        const char * const envKey = Utils::HostOsInfo::isWindowsHost() ? "USERNAME" : "USER";
-        *value = QString::fromLocal8Bit(qgetenv(envKey));
+        *value = Utils::Environment::systemEnvironment().userName();
         return true;
     }
     // Environment variables (for example '%$EMAIL%').