diff --git a/src/freedombone-tests b/src/freedombone-tests
index 31e9fcd8..3a2383c7 100755
--- a/src/freedombone-tests
+++ b/src/freedombone-tests
@@ -135,8 +135,10 @@ function test_unique_onion_ports {
 
     # test that some services are not assigned the same onion port
     FILES="/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-*"
-    ports=$(grep -r "_ONION_PORT=" "$FILES" | awk -F ':' '{print $2}' | uniq | awk -F '=' '{print $2}')
-    unique_ports=$(grep -r "_ONION_PORT=" "$FILES" | awk -F ':' '{print $2}' | uniq | awk -F '=' '{print $2}' | uniq)
+    # shellcheck disable=SC2086
+    ports=$(grep -r "_ONION_PORT=" $FILES | awk -F ':' '{print $2}' | uniq | awk -F '=' '{print $2}')
+    # shellcheck disable=SC2086
+    unique_ports=$(grep -r "_ONION_PORT=" $FILES | awk -F ':' '{print $2}' | uniq | awk -F '=' '{print $2}' | uniq)
     if [[ "$ports" != "$unique_ports" ]]; then
         echo $'Some onion ports are clashing'
         grep -r "_ONION_PORT=" "$FILES" | awk -F ':' '{print $2}' | uniq