diff --git a/Makefile.in b/Makefile.in
index 75d43fc..f08ab16 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -9,7 +9,7 @@ RUST_SRC=$(shell find $(VPATH)/. -type f -name '*.rs')
 all:    libsharegl.dummy
 
 libsharegl.dummy: lib.rs $(RUST_SRC)
-	$(RUSTC) $(RUSTFLAGS) $< --crate-type=lib --out-dir .
+	$(RUSTC) $(RUSTFLAGS) $< --out-dir .
 	touch $@
 
 sharegl-test: lib.rs $(RUST_SRC)
diff --git a/lib.rs b/lib.rs
index f5a4147..54eec80 100644
--- a/lib.rs
+++ b/lib.rs
@@ -8,6 +8,9 @@
 // except according to those terms.
 
 #[crate_id = "github.com/mozilla-servo/sharegl#0.1"];
+#[crate_type = "lib"];
+#[crate_type = "dylib"];
+#[crate_type = "rlib"];
 
 extern crate std;
 extern crate sync;