diff --git a/js/src/jit/CodeGenerator.cpp b/js/src/jit/CodeGenerator.cpp
index 35d027bcc8..fb5da943fe 100644
--- a/js/src/jit/CodeGenerator.cpp
+++ b/js/src/jit/CodeGenerator.cpp
@@ -7703,7 +7703,7 @@ JitCompartment::generateStringConcatStub(JSContext* cx)
     // lhs and rhs flags, so we just have to clear the other flags and set
     // NON_ATOM_BIT to get our rope flags (Latin1 if both lhs and rhs are
     // Latin1).
-    static_assert(JSString::INIT_ROPE_FLAGS == JSString::NON_ATOM_BIT,
+    static_assert(JSString::ROPE_FLAGS == JSString::NON_ATOM_BIT,
                   "Rope type flags must be NON_ATOM_BIT only");
     masm.and32(Imm32(JSString::LATIN1_CHARS_BIT), temp1);
     masm.or32(Imm32(JSString::NON_ATOM_BIT), temp1);
diff --git a/js/src/jsgcinlines.h b/js/src/jsgcinlines.h
index 955517fc7c..6b63db7139 100644
--- a/js/src/jsgcinlines.h
+++ b/js/src/jsgcinlines.h
@@ -9,6 +9,7 @@
 #include "mozilla/DebugOnly.h"
 #include "mozilla/Maybe.h"
 
+#include "gc/RelocationOverlay.h"
 #include "gc/GCTrace.h"
 #include "gc/Zone.h"