diff --git a/Package.swift b/Package.swift
index ac93968..e08b037 100644
--- a/Package.swift
+++ b/Package.swift
@@ -31,7 +31,8 @@ let package = Package(
                 .process("Resources")
             ],
             cSettings: [
-                .define("MARKETING_VERSION", to: "\"\(ProjectSettings.marketingVersion)\"")
+                .define("MARKETING_VERSION", to: "\"\(ProjectSettings.marketingVersion)\""),
+                .define("NS_BLOCK_ASSERTIONS", to: "1", .when(configuration: .release))
             ]
         ),
         .testTarget(