diff --git a/src/common/platform_helpers.cpp b/src/common/platform_helpers.cpp
index 2775bbe3b..dd232bfd4 100644
--- a/src/common/platform_helpers.cpp
+++ b/src/common/platform_helpers.cpp
@@ -162,4 +162,13 @@ bool IsWindows11OrLater()
     return IsWindowsVersionOrLater(kVersionWindows11);
 }
 
+bool Is64Bit()
+{
+#if defined(ANGLE_IS_64_BIT_CPU)
+    return true;
+#else
+    return false;
+#endif  // defined(ANGLE_IS_64_BIT_CPU)
+}
+
 }  // namespace angle
diff --git a/src/common/platform_helpers.h b/src/common/platform_helpers.h
index 8535360a5..d078be136 100644
--- a/src/common/platform_helpers.h
+++ b/src/common/platform_helpers.h
@@ -126,6 +126,8 @@ bool IsWindows8OrLater();
 bool IsWindows10OrLater();
 bool IsWindows11OrLater();
 
+bool Is64Bit();
+
 }  // namespace angle
 
 #endif  // COMMON_PLATFORM_HELPERS_H_
diff --git a/src/libANGLE/Program.cpp b/src/libANGLE/Program.cpp
index b7fe4f6d4..61e825a9d 100644
--- a/src/libANGLE/Program.cpp
+++ b/src/libANGLE/Program.cpp
@@ -16,6 +16,7 @@
 #include "common/bitset_utils.h"
 #include "common/debug.h"
 #include "common/platform.h"
+#include "common/platform_helpers.h"
 #include "common/string_utils.h"
 #include "common/utilities.h"
 #include "compiler/translator/blocklayout.h"
@@ -3533,6 +3534,8 @@ angle::Result Program::serialize(const Context *context, angle::MemoryBuffer *bi
         reinterpret_cast<const unsigned char *>(angle::GetANGLEShaderProgramVersion()),
         angle::GetANGLEShaderProgramVersionHashSize());
 
+    stream.writeBool(angle::Is64Bit());
+
     stream.writeInt(angle::GetANGLESHVersion());
 
     stream.writeString(context->getRendererString());
@@ -3640,6 +3643,13 @@ angle::Result Program::deserialize(const Context *context,
         return angle::Result::Stop;
     }
 
+    bool binaryIs64Bit = stream.readBool();
+    if (binaryIs64Bit != angle::Is64Bit())
+    {
+        infoLog << "cannot load program binaries across CPU architectures.";
+        return angle::Result::Stop;
+    }
+
     int angleSHVersion = stream.readInt<int>();
     if (angleSHVersion != angle::GetANGLESHVersion())
     {
diff --git a/src/tests/test_utils/angle_test_instantiate.cpp b/src/tests/test_utils/angle_test_instantiate.cpp
index c6e7e301e..535a1e0d8 100644
--- a/src/tests/test_utils/angle_test_instantiate.cpp
+++ b/src/tests/test_utils/angle_test_instantiate.cpp
@@ -362,15 +362,6 @@ bool IsQualcomm()
            IsPixel4XL();
 }
 
-bool Is64Bit()
-{
-#if defined(ANGLE_IS_64_BIT_CPU)
-    return true;
-#else
-    return false;
-#endif  // defined(ANGLE_IS_64_BIT_CPU)
-}
-
 bool HasMesa()
 {
 #if defined(ANGLE_HAS_MESA)
diff --git a/src/tests/test_utils/angle_test_instantiate.h b/src/tests/test_utils/angle_test_instantiate.h
index 2314a8612..ca7412d4f 100644
--- a/src/tests/test_utils/angle_test_instantiate.h
+++ b/src/tests/test_utils/angle_test_instantiate.h
@@ -48,7 +48,6 @@ bool IsQualcomm();
 bool IsSwiftshaderDevice();
 bool IsIntelUHD630Mobile();
 
-bool Is64Bit();
 bool HasMesa();
 
 bool IsPlatformAvailable(const PlatformParameters &param);