diff --git a/build.sh b/build.sh
index c76d7fc..2a77a25 100755
--- a/build.sh
+++ b/build.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -eu
 mkdir -p bin
-clang generate.c -o bin/generate -std=gnu2x -g
+clang src/generate.c -o bin/generate -std=gnu2x -g
 rm -rf public || true
 ./bin/generate
 cp -r pdf public/pdf
diff --git a/generate.c b/src/generate.c
similarity index 100%
rename from generate.c
rename to src/generate.c