diff --git a/package_check.sh b/package_check.sh
index 5a50000..0f5cef2 100755
--- a/package_check.sh
+++ b/package_check.sh
@@ -16,6 +16,9 @@ TEST_CONTEXT="./.tmp_test_context"
 rm -rf $TEST_CONTEXT
 mkdir -p $TEST_CONTEXT
 
+# Redirect fd 3 (=debug steam) to complete log
+exec 3>>$complete_log
+
 #=================================================
 # Starting and checking
 #=================================================
diff --git a/sub_scripts/common.sh b/sub_scripts/common.sh
index 9806875..6468fca 100755
--- a/sub_scripts/common.sh
+++ b/sub_scripts/common.sh
@@ -66,7 +66,7 @@ function log_small_title()
 
 function log_debug()
 {
-    echo "$1"
+    echo "$1" >&3
 }
 
 function log_info()
diff --git a/sub_scripts/testing_process.sh b/sub_scripts/testing_process.sh
index 7cb3e51..4d85897 100755
--- a/sub_scripts/testing_process.sh
+++ b/sub_scripts/testing_process.sh
@@ -30,7 +30,7 @@ RUN_YUNOHOST_CMD() {
     # --output-as none is to disable the json-like output for some commands like backup create
     LXC_START "sudo PACKAGE_CHECK_EXEC=1 yunohost --output-as none --debug $1" \
         | grep --line-buffered -v --extended-regexp '^[0-9]+\s+.{1,15}DEBUG' \
-        | grep -v 'processing action'
+        | grep --line-buffered -v 'processing action'
 
     returncode=${PIPESTATUS[0]}
     check_witness_files