diff --git a/scripts/test-connectors.bash b/scripts/test-connectors.bash
index 591601e..0695ce1 100755
--- a/scripts/test-connectors.bash
+++ b/scripts/test-connectors.bash
@@ -383,7 +383,7 @@ check_prerequisites() {
   local missing=0
 
   if [[ ! -f install/setup.bash ]]; then
-    fail "install/setup.bash not found; run 'colcon build' first"
+    fail "install/setup.bash not found; run 'colcon build --symlink-install' first"
     missing=1
   fi