diff --git a/poky/oe-init-build-env b/poky/oe-init-build-env
index e813230..861c3e0 100755
--- a/poky/oe-init-build-env
+++ b/poky/oe-init-build-env
@@ -31,13 +31,18 @@
     THIS_SCRIPT=$0
 else
     THIS_SCRIPT="$(pwd)/oe-init-build-env"
+    if [ ! -e "$THIS_SCRIPT" ]; then
+        echo "Error: $THIS_SCRIPT doesn't exist!" >&2
+        echo "Please run this script in oe-init-build-env's directory." >&2
+        exit 1
+    fi
 fi
 if [ -n "$BBSERVER" ]; then
     unset BBSERVER
 fi
 
 if [ -z "$ZSH_NAME" ] && [ "$0" = "$THIS_SCRIPT" ]; then
-    echo "Error: This script needs to be sourced. Please run as '. $THIS_SCRIPT'"
+    echo "Error: This script needs to be sourced. Please run as '. $THIS_SCRIPT'" >&2
     exit 1
 fi