diff --git a/ports/mimxrt/mpconfigport.h b/ports/mimxrt/mpconfigport.h
index 911fd41b46..224714b071 100644
--- a/ports/mimxrt/mpconfigport.h
+++ b/ports/mimxrt/mpconfigport.h
@@ -37,7 +37,11 @@ uint32_t trng_random_u32(void);
 #define MICROPY_CONFIG_ROM_LEVEL (MICROPY_CONFIG_ROM_LEVEL_FULL_FEATURES)
 
 // Memory allocation policies
+#if MICROPY_HW_SDRAM_AVAIL
+#define MICROPY_GC_STACK_ENTRY_TYPE         uint32_t
+#else
 #define MICROPY_GC_STACK_ENTRY_TYPE         uint16_t
+#endif
 #define MICROPY_ALLOC_PARSE_CHUNK_INIT      (32)
 #define MICROPY_ALLOC_PATH_MAX              (256)