diff --git a/kernel/src/mem.rs b/kernel/src/mem.rs
index 33f95b4f9..e9fcf922e 100644
--- a/kernel/src/mem.rs
+++ b/kernel/src/mem.rs
@@ -366,6 +366,7 @@ impl MemoryManager {
     pub fn rpt_base(&self) -> usize { unsafe { MEMORY_ALLOCATIONS.as_ptr() as usize } }
 
     #[cfg(feature = "debug-swap")]
+    #[allow(dead_code)]
     /// This function is "improper" in that it returns a bogus value if the memory allocations are
     /// out of range, but its purpose is only for debugging. This is not suitable for use in any
     /// other context.