diff --git a/core/libs/prx/libSceAgcDriver/Graphics/src/MultisampleTarget.cpp b/core/libs/prx/libSceAgcDriver/Graphics/src/MultisampleTarget.cpp
index 123627bbf..a688a413b 100644
--- a/core/libs/prx/libSceAgcDriver/Graphics/src/MultisampleTarget.cpp
+++ b/core/libs/prx/libSceAgcDriver/Graphics/src/MultisampleTarget.cpp
@@ -177,8 +177,16 @@ struct GuardedRange {
     std::uint32_t samples;
 };
 
+class PrimedSharedMutex : public std::shared_mutex {
+public:
+    PrimedSharedMutex() {
+        lock();
+        unlock();
+    }
+};
+
 std::shared_mutex& guardedMutex() {
-    static std::shared_mutex mutex;
+    static PrimedSharedMutex mutex;
     return mutex;
 }
 
diff --git a/core/shader/recompiler/Recompiler.cpp b/core/shader/recompiler/Recompiler.cpp
index 80670d6e3..36912ed03 100644
--- a/core/shader/recompiler/Recompiler.cpp
+++ b/core/shader/recompiler/Recompiler.cpp
@@ -652,7 +652,7 @@ struct RegistrationModuleEntry {
 std::shared_ptr<const SpecializedModule> registrationModule(std::uint64_t variantId, std::span<const std::uint32_t> moduleKey, const std::function<std::shared_ptr<const SpecializedModule>()>& specialize) {
     std::vector<std::uint64_t> key{variantId};
     key.insert(key.end(), moduleKey.begin(), moduleKey.end());
-    static std::shared_mutex mutex;
+    static PrimedSharedMutex mutex;
     static std::map<std::vector<std::uint64_t>, std::shared_ptr<RegistrationModuleEntry>> modules;
     std::shared_ptr<RegistrationModuleEntry> entry;
     {