diff --git a/Dockerfile b/Dockerfile
index 3d22bcd5b01a7ab36f239f11bca3cbb62d2329d8..90f5cb62da78278d2aabd030c003f6d685b0f023 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,7 @@ ENV COMPONENT=connect
 
 ENV DOCKER_SCRIPT_DIR=/opt/caas/bin
 ENV COMPONENT_SCRIPT_DIR=/opt/confluent/etc
-ENV CUB_CLASSPATH="/usr/share/java/cp-base-new/*"
+ENV CUB_CLASSPATH='"/usr/share/java/cp-base-new/*"'
 
 WORKDIR /opt