diff --git a/src/bytes.rs b/src/bytes.rs
index 789fded..20af871 100644
--- a/src/bytes.rs
+++ b/src/bytes.rs
@@ -1890,8 +1890,8 @@ impl Inner {
     #[inline]
     fn is_shared(&mut self) -> bool {
         match self.kind() {
-            KIND_INLINE | KIND_ARC => true,
-            _ => false,
+            KIND_VEC => false,
+            _ => true,
         }
     }
 
diff --git a/tests/test_bytes.rs b/tests/test_bytes.rs
index e1938ed..1a3435f 100644
--- a/tests/test_bytes.rs
+++ b/tests/test_bytes.rs
@@ -363,6 +363,15 @@ fn extend() {
     assert_eq!(*bytes, LONG[..]);
 }
 
+#[test]
+fn from_static() {
+    let mut a = Bytes::from_static(b"ab");
+    let b = a.split_off(1);
+
+    assert_eq!(a, b"a"[..]);
+    assert_eq!(b, b"b"[..]);
+}
+
 #[test]
 // Only run these tests on little endian systems. CI uses qemu for testing
 // little endian... and qemu doesn't really support threading all that well.