diff --git a/kvm.sh b/kvm.sh
index cf0c567789..72ba9b951c 100644
--- a/kvm.sh
+++ b/kvm.sh
@@ -336,6 +336,8 @@ kvm()
       local semver="$3"
       local kreFullName="KRE-$(_kvm_requested_platform mono45)-$(_kvm_requested_architecture x86).$semver"
 
+      [[ ! -d "$KRE_USER_PACKAGES/$kreFullName" ]] && echo "$semver is not an installed KRE version." && return 1
+
       echo "Setting alias '$name' to '$kreFullName'"
       [[ ! -e "$KRE_USER_HOME/alias/" ]] && mkdir "$KRE_USER_HOME/alias/" > /dev/null