diff --git a/Tests/PriorityQueueTests/HeapTests.swift b/Tests/PriorityQueueTests/HeapTests.swift
index 880e0c8a6..ca3268580 100644
--- a/Tests/PriorityQueueTests/HeapTests.swift
+++ b/Tests/PriorityQueueTests/HeapTests.swift
@@ -9,6 +9,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#if DEBUG
 import XCTest
 @testable import PriorityQueueModule
 
@@ -419,3 +420,4 @@ final class HeapTests: XCTestCase {
     }
   }
 }
+#endif