diff --git a/Utilities/JITASM.cpp b/Utilities/JITASM.cpp
index 2eef415ca..507ac80c9 100644
--- a/Utilities/JITASM.cpp
+++ b/Utilities/JITASM.cpp
@@ -8,6 +8,7 @@
 #include "util/asm.hpp"
 #include "util/v128.hpp"
 #include "util/simd.hpp"
+#include <unistd.h>
 
 #ifdef __linux__
 #define CAN_OVERCOMMIT
diff --git a/Utilities/Thread.cpp b/Utilities/Thread.cpp
index a81117e2d..4c84975e4 100644
--- a/Utilities/Thread.cpp
+++ b/Utilities/Thread.cpp
@@ -10,6 +10,7 @@
 #include "Utilities/JIT.h"
 #include <thread>
 #include <cfenv>
+#include <sys/syscall.h>
 
 #ifdef _WIN32
 #include <Windows.h>