diff --git a/Utilities/JITASM.cpp b/Utilities/JITASM.cpp
index 4253dc900c..785e25c97f 100644
--- a/Utilities/JITASM.cpp
+++ b/Utilities/JITASM.cpp
@@ -9,7 +9,7 @@
 #include "util/v128.hpp"
 #include "util/simd.hpp"
 
-#if defined(__linux__) || defined(__APPLE__)
+#ifdef __linux__
 #include <unistd.h>
 #define CAN_OVERCOMMIT
 #endif
diff --git a/rpcs3/util/vm_native.cpp b/rpcs3/util/vm_native.cpp
index 0d566e3532..5be4b06d9b 100644
--- a/rpcs3/util/vm_native.cpp
+++ b/rpcs3/util/vm_native.cpp
@@ -260,7 +260,13 @@ namespace utils
 
 #ifdef __APPLE__
 #ifdef ARCH_ARM64
-		auto ptr = ::mmap(use_addr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_JIT | c_map_noreserve, -1, 0);
+		// NOTE: On MacOS, parallel calls to mmap can return the same address more than once. Trying to madvise the same address twice throws EPERM.
+		static std::mutex mmap_lock;
+		void* ptr;
+		{
+			std::lock_guard lock(mmap_lock);
+			ptr = ::mmap(use_addr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_JIT | c_map_noreserve, -1, 0);
+		}
 #else
 		auto ptr = ::mmap(use_addr, size, PROT_NONE, MAP_ANON | MAP_PRIVATE | MAP_JIT | c_map_noreserve, -1, 0);
 #endif