diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/BuildScript.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/BuildScript.kt
index 48ecc0e3..799964bf 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/BuildScript.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/BuildScript.kt
@@ -74,7 +74,7 @@ data class ProxyConfig(val host: String = "", val port: Int = 0, val type: Strin
     fun toAetherProxy() = Proxy(type, host, port) // TODO make support for proxy auth
 }
 
-data class HostConfig(var url: String = "", var name: String = url, var username: String? = null,
+data class HostConfig(var url: String = "", var name: String, var username: String? = null,
         var password: String? = null) {
     fun hasAuth() : Boolean {
         return (! username.isNullOrBlank()) && (! password.isNullOrBlank())
@@ -95,8 +95,10 @@ fun repos(vararg repos : String) {
     newRepos(*repos)
 }
 
+fun createRepoName(url: String) = url.replace("/", "_").replace("\\", "_").replace(":", "_")
+
 fun newRepos(vararg repos: String) {
-    repos.forEach { Kobalt.addRepo(HostConfig(it)) }
+    repos.forEach { Kobalt.addRepo(HostConfig(it, createRepoName(it))) }
 }
 
 fun buildFileClasspath(vararg deps: String) {
@@ -115,7 +117,7 @@ fun authRepos(vararg repos : HostConfig) {
 }
 
 @Directive
-fun authRepo(init: HostConfig.() -> Unit) = HostConfig().apply { init() }
+fun authRepo(init: HostConfig.() -> Unit) = HostConfig(name = "").apply { init() }
 
 @Directive
 fun glob(g: String) : IFileSpec.GlobSpec = IFileSpec.GlobSpec(g)