diff --git a/make.sh b/make.sh
index 9a6eec4..80f69c5 100755
--- a/make.sh
+++ b/make.sh
@@ -4,7 +4,7 @@ if [[ $1 == "preview" ]]; then
 	[[ $2 ]] || set -- "$1" "build"
 	if [[ $2 == "build" ]]; then
 		mkdir -p out
-		gcc src/preview_mnist.c -o out/preview_mnist
+		gcc src/mnist/preview.c -o out/preview_mnist
 		exit
 	elif [[ $2 == "train" ]]; then
 		[[ -f out/preview_mnist ]] || $0 preview build
diff --git a/src/mnist.c b/src/mnist/mnist.c
similarity index 100%
rename from src/mnist.c
rename to src/mnist/mnist.c
diff --git a/src/neural_network.c b/src/mnist/neural_network.c
similarity index 100%
rename from src/neural_network.c
rename to src/mnist/neural_network.c
diff --git a/src/preview_mnist.c b/src/mnist/preview.c
similarity index 100%
rename from src/preview_mnist.c
rename to src/mnist/preview.c