diff --git a/py/persistentcode.c b/py/persistentcode.c
index 1e3b5368b..8bf46202b 100644
--- a/py/persistentcode.c
+++ b/py/persistentcode.c
@@ -526,9 +526,11 @@ mp_raw_code_t *mp_raw_code_load(mp_reader_t *reader) {
         || read_uint(reader, NULL) > QSTR_WINDOW_SIZE) {
         mp_raise_ValueError("incompatible .mpy file");
     }
-    if (MPY_FEATURE_DECODE_ARCH(header[2]) != MP_NATIVE_ARCH_NONE
-        && MPY_FEATURE_DECODE_ARCH(header[2]) != MPY_FEATURE_ARCH) {
-        mp_raise_ValueError("incompatible .mpy arch");
+    if (MPY_FEATURE_DECODE_ARCH(header[2]) != MP_NATIVE_ARCH_NONE) {
+        byte arch = MPY_FEATURE_DECODE_ARCH(header[2]);
+        if (!MPY_FEATURE_ARCH_TEST(arch)) {
+            mp_raise_ValueError("incompatible .mpy arch");
+        }
     }
     qstr_window_t qw;
     qw.idx = 0;
diff --git a/py/persistentcode.h b/py/persistentcode.h
index fde7a4625..8769ef584 100644
--- a/py/persistentcode.h
+++ b/py/persistentcode.h
@@ -55,19 +55,34 @@
 
 // Define the host architecture
 #if MICROPY_EMIT_X86
-#define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_X86)
+    #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_X86)
 #elif MICROPY_EMIT_X64
-#define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_X64)
+    #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_X64)
 #elif MICROPY_EMIT_THUMB
-#define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_ARMV7M)
+    #if defined(__thumb2__)
+        #if defined(__ARM_FP) && (__ARM_FP & 8) == 8
+            #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_ARMV7EMDP)
+        #elif defined(__ARM_FP) && (__ARM_FP & 4) == 4
+            #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_ARMV7EMSP)
+        #else
+            #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_ARMV7EM)
+        #endif
+    #else
+        #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_ARMV7M)
+    #endif
+    #define MPY_FEATURE_ARCH_TEST(x) (MP_NATIVE_ARCH_ARMV6M <= (x) && (x) <= MPY_FEATURE_ARCH)
 #elif MICROPY_EMIT_ARM
-#define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_ARMV6)
+    #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_ARMV6)
 #elif MICROPY_EMIT_XTENSA
-#define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_XTENSA)
+    #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_XTENSA)
 #elif MICROPY_EMIT_XTENSAWIN
-#define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_XTENSAWIN)
+    #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_XTENSAWIN)
 #else
-#define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_NONE)
+    #define MPY_FEATURE_ARCH (MP_NATIVE_ARCH_NONE)
+#endif
+
+#ifndef MPY_FEATURE_ARCH_TEST
+#define MPY_FEATURE_ARCH_TEST(x) ((x) == MPY_FEATURE_ARCH)
 #endif
 
 // 16-bit little-endian integer with the second and third bytes of supported .mpy files