diff --git a/src/lib.rs b/src/lib.rs
index a91ef44..d8cd79b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -119,7 +119,7 @@ macro_rules! def_node {
 
             #[inline]
             #[doc = "Get inner"]
-            pub fn inner(&self) -> &$type {
+            pub const fn inner(&self) -> &$type {
                 &self.inner
             }
         }
@@ -190,7 +190,7 @@ macro_rules! def_generic_node {
 
             #[inline]
             #[doc = "Get inner"]
-            pub fn inner(&self) -> &T {
+            pub const fn inner(&self) -> &T {
                 &self.inner
             }
         }
diff --git a/src/linked_list.rs b/src/linked_list.rs
index a3e91b0..b963a43 100644
--- a/src/linked_list.rs
+++ b/src/linked_list.rs
@@ -140,7 +140,7 @@ impl<G: GetLinksWrapped> List<G> {
     }
 
     /// Returns whether the list is empty.
-    pub fn is_empty(&self) -> bool {
+    pub const fn is_empty(&self) -> bool {
         self.list.is_empty()
     }
 
diff --git a/src/raw_list.rs b/src/raw_list.rs
index b400f12..fc20384 100644
--- a/src/raw_list.rs
+++ b/src/raw_list.rs
@@ -104,7 +104,7 @@ impl<G: GetLinks> RawList<G> {
         Iterator::new(self.cursor_front(), self.cursor_back())
     }
 
-    pub(crate) fn is_empty(&self) -> bool {
+    pub(crate) const fn is_empty(&self) -> bool {
         self.head.is_none()
     }