diff --git a/pico_keys_sdk_import.cmake b/pico_keys_sdk_import.cmake
index e8f4927..0f5b291 100644
--- a/pico_keys_sdk_import.cmake
+++ b/pico_keys_sdk_import.cmake
@@ -225,12 +225,14 @@ set(LIBRARIES
 )
 
 set(IS_CYW43 0)
-file(READ ${PICO_SDK_PATH}/src/boards/include/boards/${PICO_BOARD}.h content)
-string(REGEX MATCHALL "CYW43_WL_GPIO_LED_PIN" _ ${content})
-if (CMAKE_MATCH_0)
-    message(STATUS "Found cyw43 LED:\t\t true")
-    set(LIBRARIES ${LIBRARIES} pico_cyw43_arch_none)
-    set(IS_CYW43 1)
+if (NOT ENABLE_EMULATION)
+    file(READ ${PICO_SDK_PATH}/src/boards/include/boards/${PICO_BOARD}.h content)
+    string(REGEX MATCHALL "CYW43_WL_GPIO_LED_PIN" _ ${content})
+    if (CMAKE_MATCH_0)
+        message(STATUS "Found cyw43 LED:\t\t true")
+        set(LIBRARIES ${LIBRARIES} pico_cyw43_arch_none)
+        set(IS_CYW43 1)
+    endif()
 endif()
 
 function(add_impl_library target)