diff --git a/ports/esp32/CMakeLists.txt b/ports/esp32/CMakeLists.txt
index ec567f9c16..3b3e34b953 100644
--- a/ports/esp32/CMakeLists.txt
+++ b/ports/esp32/CMakeLists.txt
@@ -66,4 +66,4 @@ else()
 endif()
 
 # Define the project.
-project(micropython)
+project(micropython_${MICROPY_BOARD})