diff --git a/src/asmjit/arm/a64archtraits_p.h b/src/asmjit/arm/a64archtraits_p.h
index 87559c7..d006a06 100644
--- a/src/asmjit/arm/a64archtraits_p.h
+++ b/src/asmjit/arm/a64archtraits_p.h
@@ -2,7 +2,9 @@
 //
 // See asmjit.h or LICENSE.md for license and copyright information
 // SPDX-License-Identifier: Zlib
-
+#ifndef defined SIZE_MAX
+#define SIZE_MAX (4294967295U)
+#endif
 #ifndef ASMJIT_ARM_A64ARCHTRAITS_P_H_INCLUDED
 #define ASMJIT_ARM_A64ARCHTRAITS_P_H_INCLUDED
 
diff --git a/src/asmjit/arm/a64compiler.h b/src/asmjit/arm/a64compiler.h
index bed408a..16fd048 100644
--- a/src/asmjit/arm/a64compiler.h
+++ b/src/asmjit/arm/a64compiler.h
@@ -2,7 +2,9 @@
 //
 // See asmjit.h or LICENSE.md for license and copyright information
 // SPDX-License-Identifier: Zlib
-
+#ifndef defined SIZE_MAX
+#define SIZE_MAX (4294967295U)
+#endif
 #ifndef ASMJIT_ARM_ARMCOMPILER_H_INCLUDED
 #define ASMJIT_ARM_ARMCOMPILER_H_INCLUDED