diff --git a/RPi-Pico/CMakeLists.txt b/RPi-Pico/CMakeLists.txt
index d76ec328..f549cb94 100644
--- a/RPi-Pico/CMakeLists.txt
+++ b/RPi-Pico/CMakeLists.txt
@@ -66,7 +66,7 @@ endif()
     target_compile_definitions(wolfssl PUBLIC
         WOLFSSL_USER_SETTINGS
     )
-    if (${PICO_PLATFORM} STREQUAL "rp2350")
+    if (${PICO_PLATFORM} STREQUAL "rp2350-arm-s")
         add_compile_definitions(wolfssl WOLFSSL_SP_ARM_CORTEX_M_ASM)
     elseif (${PICO_PLATFORM} STREQUAL "rp2350-riscv")
         add_compile_definitions(wolfSSL WOLFSSL_SP_RISCV32)