diff --git a/galaxy.js b/galaxy.js
index 0bc2777..fc00f92 100644
--- a/galaxy.js
+++ b/galaxy.js
@@ -225,6 +225,7 @@ export function initGalaxy({
                             } else {
                                 loadCallbacks[slot]?.accept({ slot, content, label });
                             }
+                            delete loadCallbacks[slot];
                             break;
                         }
                         case "saved": {
@@ -234,6 +235,7 @@ export function initGalaxy({
                             } else {
                                 saveCallbacks[slot]?.accept(slot);
                             }
+                            delete saveCallbacks[slot];
                             break;
                         }
                     }