diff --git a/rpcs3/Emu/Io/KeyboardHandler.cpp b/rpcs3/Emu/Io/KeyboardHandler.cpp
index 7e70577a5b..8b2a134986 100644
--- a/rpcs3/Emu/Io/KeyboardHandler.cpp
+++ b/rpcs3/Emu/Io/KeyboardHandler.cpp
@@ -306,6 +306,8 @@ void keyboard_consumer::SetIntercepted(bool intercepted)
 
 void KeyboardHandlerBase::ReleaseAllKeys()
 {
+	std::lock_guard<std::mutex> lock(m_mutex);
+
 	for (auto& [id, consumer] : m_consumers)
 	{
 		consumer.ReleaseAllKeys();