diff --git a/src/libs/utils/environment.cpp b/src/libs/utils/environment.cpp
index 25680fc04cc..19688e31fba 100644
--- a/src/libs/utils/environment.cpp
+++ b/src/libs/utils/environment.cpp
@@ -74,7 +74,7 @@ Environment::Environment()
 Environment::Environment(QStringList env)
 {
     foreach (const QString &s, env) {
-        int i = s.indexOf("=");
+        int i = s.indexOf(QLatin1Char('='));
         if (i >= 0) {
 #ifdef Q_OS_WIN
             m_values.insert(s.left(i).toUpper(), s.mid(i+1));