diff --git a/js/src/jit/ExecutableAllocator.cpp b/js/src/jit/ExecutableAllocator.cpp
index 08e550d38f7f..3de8e6b4a6c0 100644
--- a/js/src/jit/ExecutableAllocator.cpp
+++ b/js/src/jit/ExecutableAllocator.cpp
@@ -29,6 +29,10 @@
 
 #include "js/MemoryMetrics.h"
 
+#ifdef __APPLE__
+#include <TargetConditionals.h>
+#endif
+
 using namespace js::jit;
 
 size_t ExecutableAllocator::pageSize = 0;
@@ -62,7 +66,7 @@ ExecutableAllocator::addSizeOfCode(JS::CodeSizes* sizes) const
     }
 }
 
-#ifdef TARGET_OS_IPHONE
+#if TARGET_OS_IPHONE
 bool ExecutableAllocator::nonWritableJitCode = true;
 #else
 bool ExecutableAllocator::nonWritableJitCode = false;