diff --git a/Makefile b/Makefile
index 3f60516..5e50ea6 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 RUSTC ?= rustc
 RUSTDOC ?= rustdoc
 BUILD ?= build
-LIB := $(BUILD)/$(shell $(RUSTC) --crate-file-name src/toml.rs)
+LIB := $(BUILD)/$(shell $(RUSTC) --print-file-name src/toml.rs)
 TEST := $(BUILD)/tomltest
 
 all: $(LIB)