diff --git a/product-mini/platforms/nuttx/wamr.mk b/product-mini/platforms/nuttx/wamr.mk
index d82852cf..5fe31448 100644
--- a/product-mini/platforms/nuttx/wamr.mk
+++ b/product-mini/platforms/nuttx/wamr.mk
@@ -16,7 +16,9 @@ WAMR_BUILD_TARGET := X86_64
 else ifeq ($(CONFIG_ARCH_XTENSA),y)
 WAMR_BUILD_TARGET := XTENSA
 else ifeq ($(CONFIG_ARCH_SIM),y)
-ifeq ($(CONFIG_HOST_X86_64),y)
+ifeq ($(CONFIG_SIM_M32),y)
+WAMR_BUILD_TARGET := X86_32
+else
 WAMR_BUILD_TARGET := X86_64
 endif
 ifeq ($(CONFIG_HOST_MACOS),y)