diff --git a/Makefile b/Makefile
index 6db4a1f2..0a74666a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,4 @@
 tmp=_git_distcheck
-nalgebra_doc_path=doc
 
 all:
 	cargo build --release
@@ -12,8 +11,7 @@ bench:
 	rm bench~
 
 doc:
-	mkdir -p $(nalgebra_doc_path)
-	rustdoc src/lib.rs
+	cargo doc
 
 clean:
 	cargo clean
diff --git a/src/structs/spec/vec0.rs b/src/structs/spec/vec0.rs
index 3ca49091..bd016bc3 100644
--- a/src/structs/spec/vec0.rs
+++ b/src/structs/spec/vec0.rs
@@ -52,14 +52,14 @@ impl<N> vec::Vec0<N> {
     }
 }
 
-impl<N> Iterable<N> for vec::Vec0<N> {
+impl<N: 'static> Iterable<N> for vec::Vec0<N> {
     #[inline]
     fn iter<'l>(&'l self) -> Items<'l, N> {
         unsafe { mem::transmute::<&'l vec::Vec0<N>, &'l [N, ..0]>(self).iter() }
     }
 }
 
-impl<N> IterableMut<N> for vec::Vec0<N> {
+impl<N: 'static> IterableMut<N> for vec::Vec0<N> {
     #[inline]
     fn mut_iter<'l>(&'l mut self) -> MutItems<'l, N> {
         unsafe { mem::transmute::<&'l mut vec::Vec0<N>, &'l mut [N, ..0]>(self).mut_iter() }