diff --git a/.github/workflows/nightly-builds.yml b/.github/workflows/nightly-builds.yml
index 33e5415ce..c382e0dfa 100644
--- a/.github/workflows/nightly-builds.yml
+++ b/.github/workflows/nightly-builds.yml
@@ -3,8 +3,6 @@ name: Nightly builds
 on:
   push:
     branches: [ "master" ]
-  pull_request:
-    branches: [ "master" ]
 
 jobs:
   build: