diff --git a/src/cmd/edit.rs b/src/cmd/edit.rs
index c09669f..665d580 100644
--- a/src/cmd/edit.rs
+++ b/src/cmd/edit.rs
@@ -137,12 +137,21 @@ impl Edit {
             Err(err) => return Err(err),
         };
 
-        // Insert [patch.crates-io] table if it doesn't exist.
-        if let Item::None = manifest[PATCH_TABLE_NAME][REGISTRY_TABLE_NAME] {
+        if manifest.get(PATCH_TABLE_NAME).is_none() {
             let mut t = Table::new();
             t.set_implicit(true);
             manifest[PATCH_TABLE_NAME] = Item::Table(t);
-            manifest[PATCH_TABLE_NAME][REGISTRY_TABLE_NAME] = Item::Table(Table::new());
+        }
+
+        // Insert [patch.crates-io] table if it doesn't exist.
+        if manifest
+            .get(PATCH_TABLE_NAME)
+            .unwrap()
+            .get(REGISTRY_TABLE_NAME)
+            .is_none()
+        {
+            let t = Table::new();
+            manifest[PATCH_TABLE_NAME][REGISTRY_TABLE_NAME] = Item::Table(t);
         }
         manifest[PATCH_TABLE_NAME][REGISTRY_TABLE_NAME][&self.crate_name]["path"] =
             value(new_path.to_str().unwrap());