diff --git a/installJRMC b/installJRMC
index 401c9d4..7b25381 100755
--- a/installJRMC
+++ b/installJRMC
@@ -443,7 +443,7 @@ init() {
       debian|ubuntu)
         # ARM packages append arch to the package name
         if [[ $MC_ARCH == "arm64" || $MC_ARCH == "armhf" ]]; then
-          MC_PKG+=":${MC_ARCH}"
+          MC_PKG+="-${MC_ARCH}"
         fi
         MC_PKG+="=$MC_VERSION"
         ;;