--- a/js/src/jit/AtomicOperations.h
+++ b/js/src/jit/AtomicOperations.h
@@ -319,16 +319,18 @@ AtomicOperations::isLockfree(int32_t siz
 
 } // namespace jit
 } // namespace js
 
 #if defined(JS_CODEGEN_ARM)
 # include "jit/arm/AtomicOperations-arm.h"
 #elif defined(JS_CODEGEN_ARM64)
 # include "jit/arm64/AtomicOperations-arm64.h"
+#elif defined(__m68k__)
+# include "jit/none/AtomicOperations-ppc.h"
 #elif defined(JS_CODEGEN_MIPS32) || defined(JS_CODEGEN_MIPS64)
 # include "jit/mips-shared/AtomicOperations-mips-shared.h"
 #elif defined(__ppc__) || defined(__PPC__)
 # include "jit/none/AtomicOperations-ppc.h"
 #elif defined(__sparc__)
 # include "jit/none/AtomicOperations-sparc.h"
 #elif defined(JS_CODEGEN_NONE)
   // You can disable the JIT with --disable-ion but you must still