diff --git a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt
index 6def1f05..992fd64b 100644
--- a/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt
+++ b/src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt
@@ -110,6 +110,8 @@ class KotlinCompiler @Inject constructor(
                 command = java.absolutePath
                 args = newArgs
                 directory = File(".")
+                // The Kotlin compiler issues warnings on stderr :-(
+                useErrorStreamAsErrorIndicator = false
             }).invoke()
             return TaskResult(result == 0, "Error while compiling")
         }