diff --git a/.github/workflows/daily-grammar-check.yml b/.github/workflows/daily-grammar-check.yml
index 8b90c2e53b..88b44eeb87 100644
--- a/.github/workflows/daily-grammar-check.yml
+++ b/.github/workflows/daily-grammar-check.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   grammar-check:
-    if: github.repository == 'rust-lang/reference'
+    if: github.repository == 'rust-lang/reference' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-latest
     steps:
     - name: Checkout reference repository
@@ -44,7 +44,7 @@ jobs:
         cargo run --release -p grammar-check -- lex-compare --tool rustc_parse
 
     - name: Check for existing open issues
-      if: steps.grammar-check.outcome == 'failure'
+      if: github.repository == 'rust-lang/reference' && steps.grammar-check.outcome == 'failure'
       id: check-issues
       env:
         GH_TOKEN: ${{ github.token }}
@@ -54,7 +54,7 @@ jobs:
         echo "open_issues=$ISSUE_COUNT" >> $GITHUB_OUTPUT
 
     - name: Create issue on failure
-      if: steps.grammar-check.outcome == 'failure' && steps.check-issues.outputs.open_issues == '0'
+      if: github.repository == 'rust-lang/reference' && steps.grammar-check.outcome == 'failure' && steps.check-issues.outputs.open_issues == '0'
       env:
         GH_TOKEN: ${{ github.token }}
       run: |