diff --git a/src/state.ts b/src/state.ts
index 3d14a43..6d52eaf 100644
--- a/src/state.ts
+++ b/src/state.ts
@@ -257,7 +257,7 @@ export class ActiveResult extends ActiveSource {
         type == "delete" && cur(tr.startState) == this.from)
       return new ActiveSource(this.source, type == "input" && conf.activateOnTyping ? State.Pending : State.Inactive)
     let explicitPos = this.explicitPos < 0 ? -1 : tr.changes.mapPos(this.explicitPos)
-    if (checkValid(result.validFor, tr.state, from, to))
+    if (checkValid(result.validFor, tr, from, to))
       return new ActiveResult(this.source, explicitPos, result, from, to)
     if (result.update &&
         (result = result.update(result, from, to, new CompletionContext(tr.state, pos, explicitPos >= 0))))
@@ -279,10 +279,10 @@ export class ActiveResult extends ActiveSource {
 }
 
 function checkValid(validFor: undefined | RegExp | ((text: string, from: number, to: number, state: EditorState) => boolean),
-                    state: EditorState, from: number, to: number) {
-  if (!validFor) return false
-  let text = state.sliceDoc(from, to)
-  return typeof validFor == "function" ? validFor(text, from, to, state) : ensureAnchor(validFor, true).test(text)
+                    tr: Transaction, from: number, to: number) {
+  if (!validFor || tr.isUserEvent("input.complete")) return false
+  let text = tr.state.sliceDoc(from, to)
+  return typeof validFor == "function" ? validFor(text, from, to, tr.state) : ensureAnchor(validFor, true).test(text)
 }
 
 export const setActiveEffect = StateEffect.define<readonly ActiveSource[]>({