diff --git a/ner_environment/build_system/build_system.py b/ner_environment/build_system/build_system.py
index 7ef48e8a..e04e22ac 100644
--- a/ner_environment/build_system/build_system.py
+++ b/ner_environment/build_system/build_system.py
@@ -55,7 +55,7 @@ class OpenOCDLocation(str, Enum):
 # ==============================================================================
 
 @app.command(help="Build the project with GCC ARM Toolchain and Make/CMake")
-def build(profile: str = typer.Option(None, "--profile", "-p", callback=unsupported_option_cb, help="(planned) Specify the build profile (e.g., debug, release)", show_default=True),
+def build(profile: str = typer.Option("release", "--profile", "-p", help="Specify the build profile (e.g., debug, release)", show_default=True),
           clean: bool = typer.Option(False, "--clean", help="Clean the build directory before building", show_default=True)):
     is_cmake = os.path.exists("CMakeLists.txt")
     if is_cmake: # Repo uses CMake, so execute CMake commands.
@@ -64,7 +64,7 @@ def build(profile: str = typer.Option(None, "--profile", "-p", callback=unsuppor
             run_command_docker('cmake --build build --target clean ; find . -type d -name "build" -exec rm -rf {} +')
             print("[#cccccc](ner build):[/#cccccc] [green]Ran build-cleaning command.[/green]")
         else:
-            run_command_docker("mkdir -p build && cd build && cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=cmake/gcc-arm-none-eabi.cmake .. && cmake --build .", stream_output=True)
+            run_command_docker(f"mkdir -p build && cd build && cmake -DCMAKE_BUILD_TYPE={profile.capitalize()} -DCMAKE_TOOLCHAIN_FILE=cmake/gcc-arm-none-eabi.cmake .. && cmake --build .", stream_output=True)
             run_command_docker('chmod 777  -R ./build/*')
     else: # Repo uses Make, so execute Make commands.
         print("[#cccccc](ner build):[/#cccccc] [blue]Makefile-based project detected.[/blue]")