diff --git a/src/plugins/debugger/gdb/gdbengine.cpp b/src/plugins/debugger/gdb/gdbengine.cpp
index 829d970daf7..fd9569be124 100644
--- a/src/plugins/debugger/gdb/gdbengine.cpp
+++ b/src/plugins/debugger/gdb/gdbengine.cpp
@@ -4221,7 +4221,7 @@ void GdbEngine::startGdb(const QStringList &args)
     postCommand("python from gdbbridge import *", flags);
 
     const QString path = stringSetting(ExtraDumperFile);
-    if (!path.isEmpty()) {
+    if (!path.isEmpty() && QFileInfo(path).isReadable()) {
         DebuggerCommand cmd("addDumperModule");
         cmd.arg("path", path.toUtf8());
         runCommand(cmd);
diff --git a/src/plugins/debugger/lldb/lldbengine.cpp b/src/plugins/debugger/lldb/lldbengine.cpp
index 6a5e21df9eb..f74dd4da0b0 100644
--- a/src/plugins/debugger/lldb/lldbengine.cpp
+++ b/src/plugins/debugger/lldb/lldbengine.cpp
@@ -291,7 +291,7 @@ void LldbEngine::startLldbStage2()
 void LldbEngine::setupInferior()
 {
     const QString path = stringSetting(ExtraDumperFile);
-    if (!path.isEmpty()) {
+    if (!path.isEmpty() && QFileInfo(path).isReadable()) {
         DebuggerCommand cmd("addDumperModule");
         cmd.arg("path", path.toUtf8());
         runCommand(cmd);