diff --git a/platform/platform-impl/src/com/intellij/platform/ide/impl/customization/OpenIdeExternalResourceUrls.kt b/platform/platform-impl/src/com/intellij/platform/ide/impl/customization/OpenIdeExternalResourceUrls.kt
index b643b8ac8543..aa2c40ad6d2e 100644
--- a/platform/platform-impl/src/com/intellij/platform/ide/impl/customization/OpenIdeExternalResourceUrls.kt
+++ b/platform/platform-impl/src/com/intellij/platform/ide/impl/customization/OpenIdeExternalResourceUrls.kt
@@ -30,7 +30,8 @@ class OpenIdeExternalResourceUrls : ExternalProductResourceUrls {
       .let { Urls.newFromEncoded(it) }
 
   override fun computePatchUrl(from: BuildNumber, to: BuildNumber): Url =
-    Urls.newFromEncoded("https://download.openide.ru/ide").resolve(computePatchFileName(from, to))
+    System.getProperty("idea.patches.url", "https://download.openide.ru/ide")
+      .let { Urls.newFromEncoded(it).resolve(computePatchFileName(from, to)) }
 
   override val bugReportUrl: ((String) -> Url)
     get() = { Urls.newFromEncoded("https://gitflic.ru/project/openide/openide/issue/create") }