diff --git a/packages/core/src/Editor.ts b/packages/core/src/Editor.ts
index ec487eae..062418e2 100644
--- a/packages/core/src/Editor.ts
+++ b/packages/core/src/Editor.ts
@@ -237,7 +237,7 @@ export class Editor extends EventEmitter {
    */
   private createExtensionManager() {
     const coreExtensions = Object.entries(extensions).map(([, extension]) => extension())
-    const allExtensions = [...coreExtensions, ...this.options.extensions]
+    const allExtensions = [...this.options.extensions, ...coreExtensions]
 
     this.extensionManager = new ExtensionManager(allExtensions, this.proxy)
   }
diff --git a/packages/core/src/extensions/baseKeymap.ts b/packages/core/src/extensions/baseKeymap.ts
new file mode 100644
index 00000000..95508a4e
--- /dev/null
+++ b/packages/core/src/extensions/baseKeymap.ts
@@ -0,0 +1,14 @@
+import { baseKeymap } from 'prosemirror-commands'
+import { createExtension } from '../Extension'
+
+export const BaseKeymap = createExtension({
+  addKeyboardShortcuts() {
+    return baseKeymap
+  },
+})
+
+declare module '../Editor' {
+  interface AllExtensions {
+    BaseKeymap: typeof BaseKeymap,
+  }
+}
diff --git a/packages/core/src/extensions/index.ts b/packages/core/src/extensions/index.ts
index c269e279..463db8c5 100644
--- a/packages/core/src/extensions/index.ts
+++ b/packages/core/src/extensions/index.ts
@@ -5,9 +5,10 @@ export { DeleteSelection } from './deleteSelection'
 export { Editable } from './editable'
 export { Focus } from './focus'
 export { FocusEvents } from './focusEvents'
+export { InputRules } from './inputRules'
 export { InsertHTML } from './insertHTML'
 export { InsertText } from './insertText'
-export { Keymap } from './keymap'
+export { BaseKeymap } from './baseKeymap'
 export { LiftListItem } from './liftListItem'
 export { RemoveMark } from './removeMark'
 export { RemoveMarks } from './removeMarks'
diff --git a/packages/core/src/extensions/inputRules.ts b/packages/core/src/extensions/inputRules.ts
new file mode 100644
index 00000000..c9e09d66
--- /dev/null
+++ b/packages/core/src/extensions/inputRules.ts
@@ -0,0 +1,16 @@
+import { undoInputRule } from 'prosemirror-inputrules'
+import { createExtension } from '../Extension'
+
+export const InputRules = createExtension({
+  addKeyboardShortcuts() {
+    return {
+      Backspace: undoInputRule,
+    }
+  },
+})
+
+declare module '../Editor' {
+  interface AllExtensions {
+    InputRules: typeof InputRules,
+  }
+}
diff --git a/packages/core/src/extensions/keymap.ts b/packages/core/src/extensions/keymap.ts
deleted file mode 100644
index c3a5963e..00000000
--- a/packages/core/src/extensions/keymap.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import { keymap } from 'prosemirror-keymap'
-import { baseKeymap } from 'prosemirror-commands'
-import { undoInputRule } from 'prosemirror-inputrules'
-import { createExtension } from '../Extension'
-
-export const Keymap = createExtension({
-  addProseMirrorPlugins() {
-    return [
-      keymap({ Backspace: undoInputRule }),
-      keymap(baseKeymap),
-    ]
-  },
-})
-
-declare module '../Editor' {
-  interface AllExtensions {
-    Keymap: typeof Keymap,
-  }
-}
diff --git a/packages/core/src/extensions/splitBlock.ts b/packages/core/src/extensions/splitBlock.ts
index 39b78241..98359fd2 100644
--- a/packages/core/src/extensions/splitBlock.ts
+++ b/packages/core/src/extensions/splitBlock.ts
@@ -26,7 +26,7 @@ export const SplitBlock = createExtension({
           }
 
           if (dispatch) {
-            dispatch(tr.split($from.pos).scrollIntoView())
+            tr.split($from.pos).scrollIntoView()
           }
 
           return true