diff --git a/linux-4.9.68-193.bee b/linux-4.9.68-193.bee
index 43758ac59..b7e25db05 100755
--- a/linux-4.9.68-193.bee
+++ b/linux-4.9.68-193.bee
@@ -25,6 +25,9 @@ FULLKERNELVERSION="${KERNELVERSION}${KERNELLOCAL}"
 
 B=${S}
 
+ls ${BEE_PKGDIR}/linux-[0-9].[0-9]*-${PKGREVISION}.x86_64.bee.* 2>/dev/null \
+    && echo "A kernel with revision ${PKGREVISION} has already been build."  && exit
+
 mee_patch() {
     echo "PATCH $@"
     bee_patch $@