diff --git a/scripts/build.sh b/scripts/build.sh
index c786ed4bb243601996006c615b52c18e8a57c55f..682e7499574f0fb33afe2b4fd23bcb8863e3133c 100644
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -121,7 +121,7 @@ for target in "${TARGETS[@]}" ; do
 	merge+=("$origdir/manifest.merge.json")
     [ "$beta" -a -f "$sourcedir/manifest.beta.merge.json" ] && \
 	merge+=("$sourcedir/manifest.beta.merge.json")
-    [ "$origdir" -a "$beta" -a -f "$sourcedir/manifest.beta.merge.json" ] && \
+    [ "$origdir" -a "$beta" -a -f "$origdir/manifest.beta.merge.json" ] && \
 	merge+=("$origdir/manifest.beta.merge.json")
 
     override=()