diff --git a/scripts/setup-emlinux b/scripts/setup-emlinux
index 89d29ed6..b9dd53a2 100755
--- a/scripts/setup-emlinux
+++ b/scripts/setup-emlinux
@@ -1,5 +1,10 @@
 #!/bin/bash
 
+if [[ $BASH_SOURCE == "$0" ]]; then
+  echo "Please run this script using the source command."
+  exit
+fi
+
 clean_up()
 {
     unset EML_BUILDDIR EML_BUILDDIR_SETUP_DONE REPOS EML_HOOKS