diff --git a/stm-firmware/CMakeLists.txt b/stm-firmware/CMakeLists.txt
index b9c4c6f..31573fe 100644
--- a/stm-firmware/CMakeLists.txt
+++ b/stm-firmware/CMakeLists.txt
@@ -61,7 +61,7 @@ if (VIRTUALENV)
 	)
 	message("${BoldGreen}python virtual environment set up!${ColorReset}")
 else(VIRTUALENV)
-	message("${BoldRed}Python virtual environment not set up: virtualenv: command not found!${ColorReset}")
+	message(FATAL_ERROR "${BoldRed}Python virtual environment not set up: virtualenv: command not found!${ColorReset}")
 endif (VIRTUALENV)
 
 
diff --git a/stm-firmware/updater/ram-code/CMakeLists.txt b/stm-firmware/updater/ram-code/CMakeLists.txt
index 3a14124..65fd1ab 100644
--- a/stm-firmware/updater/ram-code/CMakeLists.txt
+++ b/stm-firmware/updater/ram-code/CMakeLists.txt
@@ -6,6 +6,15 @@ cmake_minimum_required(VERSION 3.0)
 
 set(CMAKE_TOOLCHAIN_FILE "arm-none-eabi-gcc.cmake")
 
+find_package(Python COMPONENTS Interpreter)
+
+if (Python_FOUND)
+	message("Python interpreter used for converting updater RAM code: ${Python_EXECUTABLE}")
+else (Python_FOUND)
+	message(FATAL_ERROR "${BoldRed}Python interpreter not found! Please install python 3.${ColorReset}")
+endif (Python_FOUND)
+
+
 set(ELFFILE ${PROJECT_NAME}.elf)
 set(LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/ram-link.ld)
 
@@ -44,5 +53,5 @@ add_custom_command(DEPENDS
 		   OUTPUT
 		   	${GEN_HEADER_FILE}
 		   COMMAND
-		   	mkdir -p ${GEN_HEADER_PATH} && python "${CMAKE_CURRENT_SOURCE_DIR}/bin2carray.py" "${GEN_HEADER_FILE}" "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.bin"
+		   	mkdir -p ${GEN_HEADER_PATH} && ${Python_EXECUTABLE} "${CMAKE_CURRENT_SOURCE_DIR}/bin2carray.py" "${GEN_HEADER_FILE}" "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.bin"
 		   )