diff --git a/src/libs/utils/pathchooser.cpp b/src/libs/utils/pathchooser.cpp
index ef30703c9b7..6b11f4fea56 100644
--- a/src/libs/utils/pathchooser.cpp
+++ b/src/libs/utils/pathchooser.cpp
@@ -6,6 +6,7 @@
 #include "commandline.h"
 #include "environment.h"
 #include "fileutils.h"
+#include "guard.h"
 #include "hostosinfo.h"
 #include "macroexpander.h"
 #include "qtcassert.h"
@@ -174,6 +175,7 @@ public:
     const MacroExpander *m_macroExpander = globalMacroExpander();
     std::function<void()> m_openTerminal;
     bool m_allowPathFromDevice = false;
+    Guard m_callGuard;
 };
 
 PathChooserPrivate::PathChooserPrivate()
@@ -350,11 +352,15 @@ QString PathChooser::expandedDirectory(const QString &input, const Environment &
 
 void PathChooser::setPath(const QString &path)
 {
+    QTC_ASSERT(!d->m_callGuard.isLocked(), return);
+    GuardLocker locker(d->m_callGuard);
     d->m_lineEdit->setTextKeepingActiveCursor(QDir::toNativeSeparators(path));
 }
 
 void PathChooser::setFilePath(const FilePath &fn)
 {
+    QTC_ASSERT(!d->m_callGuard.isLocked(), return);
+    GuardLocker locker(d->m_callGuard);
     d->m_lineEdit->setTextKeepingActiveCursor(fn.toUserOutput());
 }