diff --git a/makefile_web b/makefile_web
index 4a4744c8..370d9c67 100644
--- a/makefile_web
+++ b/makefile_web
@@ -3,11 +3,11 @@ SRCS := $(wildcard $(SRC_DIR)/**)
 
 .PHONY: clean full-clean web tarball
 
-web: out/boids.js out/boids.wasm out/index.html
+web: out/boids.js out/boids_bg.wasm out/index.html
 
 tarball: boids_web_root.tar
 
-boids_web_root.tar: out/boids.js out/boids.wasm out/index.html
+boids_web_root.tar: out/boids.js out/boids_bg.wasm out/index.html
 	tar -caf $@ $<
 
 target/wasm32-unknown-unknown/wasm-release/another-boids-in-rust.wasm: $(SRCS)
@@ -18,7 +18,7 @@ out:
 
 # Both the JS and WASM files are generated by the wasm-bindgen call, so both
 # get to be on the target half of this recipe.
-out/boids.js out/boids.wasm: target/wasm32-unknown-unknown/wasm-release/another-boids-in-rust.wasm | out
+out/boids.js out/boids_bg.wasm: target/wasm32-unknown-unknown/wasm-release/another-boids-in-rust.wasm | out
 	wasm-bindgen --no-typescript --target web --out-dir ./out/ --out-name boids target/wasm32-unknown-unknown/wasm-release/another-boids-in-rust.wasm
 
 out/index.html: www/index.html