diff --git a/Makefile b/Makefile
index 0f269f7..46fd88e 100644
--- a/Makefile
+++ b/Makefile
@@ -54,7 +54,7 @@ build/o/libsysexits.rlib: build
 		| $(RUSTC) $(RUSTFLAGS) --crate-type lib -o build/o/libsysexits.rlib -
 
 build/o/libgetopt.rlib: src/getopt-rs/lib.rs
-	$(RUSTC) $(RUSTCFLAGS) --crate-type=lib --crate-name=getopt \
+	$(RUSTC) $(RUSTFLAGS) --crate-type=lib --crate-name=getopt \
 		-o build/o/libgetopt.rlib src/getopt-rs/lib.rs
 
 .PHONY: dj