diff --git a/src/context/memory.rs b/src/context/memory.rs
index 8ac4c43089..7ab71143a4 100644
--- a/src/context/memory.rs
+++ b/src/context/memory.rs
@@ -2668,7 +2668,10 @@ fn correct_inner<'l>(
 
                             new_frame
                         }
-                        Err(AddRefError::SharedToCow) => unreachable!(),
+                        Err(AddRefError::SharedToCow) => {
+                            log::error!("unexpected SharedToCow in shared page path");
+                            return Err(PfError::Oom);
+                        }
                         Err(AddRefError::RcOverflow) => return Err(PfError::Oom),
                     }
                 }