diff --git a/makefile_web b/makefile_web
index 4411489f..73dddafb 100644
--- a/makefile_web
+++ b/makefile_web
@@ -1,6 +1,12 @@
 SRC_DIR = ./src
 SRCS := $(wildcard $(SRC_DIR)/**)
 
+# Patch these to select a different build profile or target
+# The target shouldn't change any time soon. WASM64, I guess. Other targets
+# aren't aimed at the web, so you shouldn't be using this makefile.
+CARGO_TARGET := wasm32-unknown-unknown
+CARGO_PROFILE := wasm-release
+
 .PHONY: clean full-clean web tarball
 
 web: out/boids.js out/boids_bg.wasm out/index.html
@@ -10,16 +16,16 @@ tarball: boids_web_root.tar
 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: $(SRCS)
-	cargo build --profile wasm-release --target wasm32-unknown-unknown
+target/$(CARGO_TARGET)/$(CARGO_PROFILE)/another-boids-in-rust.wasm: $(SRCS)
+	cargo build --profile $(CARGO_PROFILE) --target $(CARGO_TARGET)
 
 out:
 	mkdir $@
 
 # 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_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/boids.js out/boids_bg.wasm &: target/$(CARGO_TARGET)/$(CARGO_PROFILE)/another-boids-in-rust.wasm | out
+	wasm-bindgen --no-typescript --target web --out-dir ./out/ --out-name boids target/$(CARGO_TARGET)/$(CARGO_PROFILE)/another-boids-in-rust.wasm
 
 out/index.html: www/index.html
 	cp -a $< $@