diff --git a/build.gradle b/build.gradle
index e8aa249eef6..27404cb81c3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -397,6 +397,7 @@ task bundle(type: Tar) {
         exclude '**/settings.gradle'
         exclude '**/build'
         exclude '**/.gradle'
+        exclude 'samples/**/*.kt.bc-build'
         rename('(.*)\\.for_bundle', '$1')
         into baseName
     }
diff --git a/samples/concurrent/build.gradle b/samples/concurrent/build.gradle
index d2bc9c03daa..4dbb54880d2 100644
--- a/samples/concurrent/build.gradle
+++ b/samples/concurrent/build.gradle
@@ -14,10 +14,11 @@ konanArtifacts {
 }
 
 task compileCpp(type: Exec) {
+    dependsOn 'genMessageChannelInteropStubs'
     workingDir project.getProjectDir()
     commandLine './buildCpp.sh'
 }
 
-genMessageChannelInteropStubs {
-    dependsOn(compileCpp)
+compileKonanMessageChannel {
+    dependsOn 'compileCpp'
 }
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