diff --git a/compiler/compiler.pro b/compiler/compiler.pro
index 22354ac4c9b..4014ab49967 100644
--- a/compiler/compiler.pro
+++ b/compiler/compiler.pro
@@ -112,6 +112,9 @@ messages/**)
 # for j2k
 -keep class com.intellij.codeInsight.NullableNotNullManager { public protected *; }
 
+# for gradle (see KT-12549)
+-keep class com.intellij.lang.properties.charset.Native2AsciiCharsetProvider { *; }
+
 # for kotlin-build-common (consider repacking compiler together with kotlin-build-common and remove this part afterwards)
 -keep class com.intellij.util.io.IOUtil { public *; }
 -keep class com.intellij.openapi.util.io.FileUtil { public *; }