diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index aa421b71..c0913367 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -62,7 +62,7 @@ jobs:
         CFW_HASH="${{ steps.cfwsha.outputs.cfw_sha }}" CFW_TAG="${{ steps.cfwsha.outputs.cfw_tag }}" CFW_ITERATION="${{ steps.cfwsha.outputs.cfw_iteration }}" \
         APPEND_VERSION="-Dev_build$(echo ${{ github.ref_name != 'master' && github.ref_name || '' }} | sed 's/\//-/g' | sed '/./ s/^/-/')" 2>&1 \
         | tee build.log \
-        | grep ">>>" \
+        | grep --line-buffered "^>>>" \
         ); then tail -n100 build.log && exit 1
         fi
  
@@ -154,7 +154,7 @@ jobs:
         CFW_HASH="${{ steps.cfwsha.outputs.cfw_sha }}" CFW_TAG="${{ steps.cfwsha.outputs.cfw_tag }}" CFW_ITERATION="${{ steps.cfwsha.outputs.cfw_iteration }}" \
         APPEND_VERSION="-Dev_build$(echo ${{ github.ref_name != 'master' && github.ref_name || '' }} | sed 's/\//-/g' | sed '/./ s/^/-/')" 2>&1 \
         | tee build.log \
-        | grep ">>>" \
+        | grep --line-buffered "^>>>" \
         ); then tail -n100 build.log && exit 1
         fi
  
@@ -231,7 +231,7 @@ jobs:
         if ! ( \
         make -j $CPU_N sdk 2>&1 \
         | tee build.log \
-        | grep ">>>" \
+        | grep --line-buffered "^>>>" \
         ); then tail -n100 build.log && exit 1
         fi
  
@@ -284,7 +284,7 @@ jobs:
         if ! ( \
         make -j $CPU_N sdk 2>&1 \
         | tee build.log \
-        | grep ">>>" \
+        | grep --line-buffered "^>>>" \
         ); then tail -n100 build.log && exit 1
         fi