diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index e496783b9..81e8b6d6a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -77,7 +77,7 @@ jobs:
             mkdir build
             cd build
             cmake ..
-            make -j 4
+            make -j
             file iqtree2 | grep aarch64
 
   build-macos-x86_64: