diff --git a/CMakeLists.txt b/CMakeLists.txt
index 717a41e..bfe05ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,32 +1,30 @@
-cmake_minimum_required(VERSION 3.28 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.22)
 project(perlin-shadows)
 
 set(CMAKE_CXX_STANDARD 23)
 
+include_directories(src)
+
 link_libraries(-lGL -lglut -lGLEW -lGLU)
 
-add_executable(${CMAKE_PROJECT_NAME})
-target_sources(${CMAKE_PROJECT_NAME}
-	PRIVATE
-		src/constants.h
-		src/final.cpp
-		src/geography.cpp
-		src/geography.h
-		src/grid.cpp
-		src/grid.h
-		src/renderer.cpp
-		src/renderer.h
-		src/camera.cpp
-		src/camera.h
-		src/shader.cpp
-		src/shader.h
-		src/point_light.cpp
-		src/point_light.h
-		src/renderable.cpp
-		src/renderable.h
-	PRIVATE
-		FILE_SET modules TYPE CXX_MODULES FILES
-		src/noise.cppm
+add_executable(perlin-shadows
+        src/constants.h
+        src/final.cpp
+        src/geography.cpp
+        src/geography.h
+        src/grid.cpp
+        src/grid.h
+        src/noise_math.h
+        src/renderer.cpp
+        src/renderer.h
+        src/camera.cpp
+        src/camera.h
+        src/shader.cpp
+        src/shader.h
+        src/point_light.cpp
+        src/point_light.h
+        src/renderable.cpp
+        src/renderable.h
 )
 
 file(READ src/shader/phong.vert PHONG_VERT)
@@ -38,5 +36,4 @@ file(READ src/shader/shadow.frag SHADOW_FRAG)
 file(READ src/shader/shadow.geom SHADOW_GEOM)
 configure_file(src/point_light.in.h src/point_light.h @ONLY)
 
-include_directories(src)
 target_include_directories(perlin-shadows PUBLIC "${CMAKE_CURRENT_BINARY_DIR}/src")
diff --git a/src/grid.cpp b/src/grid.cpp
index 8fea867..64fd085 100644
--- a/src/grid.cpp
+++ b/src/grid.cpp
@@ -4,11 +4,9 @@
 #include <vector>
 
 #include "constants.h"
-
-import noise;
+#include "noise_math.h"
 
 using namespace std;
-using namespace noise;
 
 random_device Grid::device_;
 default_random_engine::result_type Grid::base_random_{0};
diff --git a/src/noise.cppm b/src/noise_math.h
similarity index 91%
rename from src/noise.cppm
rename to src/noise_math.h
index 0c40e94..b5d1d08 100644
--- a/src/noise.cppm
+++ b/src/noise_math.h
@@ -1,6 +1,4 @@
-export module noise;
-
-export namespace noise {
+#pragma once
 
 // Based on Ken Perlin's smoother step function:
 // https://en.wikipedia.org/wiki/Smoothstep#Variations Returns value in range
@@ -23,5 +21,3 @@ export namespace noise {
                                           const float bound_1) {
   return bound_0 + SmootherStep(x) * (bound_1 - bound_0);
 }
-
-}  // namespace noise