diff --git a/makefile b/makefile
index 3161a89..44246a6 100644
--- a/makefile
+++ b/makefile
@@ -2,10 +2,12 @@
 
 default: bin/rewild.hl
 
-bin/rewild.hl: **/*.hx
+SOURCES := $(shell find . -name \*.hx -print)
+
+bin/rewild.hl: $(SOURCES)
 	haxe compile-hl.hxml
 
-bin/rewild.js: **/*.hx
+bin/rewild.js: $(SOURCES)
 	haxe compile-js.hxml
 
 clean: