diff --git a/Annotations/TestHelper.Monkey.Annotations.asmdef b/Annotations/TestHelper.Monkey.Annotations.asmdef
index dee84c7..3b1a7ec 100644
--- a/Annotations/TestHelper.Monkey.Annotations.asmdef
+++ b/Annotations/TestHelper.Monkey.Annotations.asmdef
@@ -8,7 +8,9 @@
     "overrideReferences": false,
     "precompiledReferences": [],
     "autoReferenced": false,
-    "defineConstraints": [],
+    "defineConstraints": [
+        "UNITY_INCLUDE_TESTS || COM_NOWSPRINTING_TEST_HELPER_ENABLE"
+    ],
     "versionDefines": [],
     "noEngineReferences": false
-}
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index 1c23177..5f084d2 100644
--- a/README.md
+++ b/README.md
@@ -240,6 +240,14 @@ public class MyIntegrationTest
 
 
 
+## Use in runtime code
+
+The "Define Constraints" is set to `UNITY_INCLUDE_TESTS || COM_NOWSPRINTING_TEST_HELPER_ENABLE` in this package's assembly definition files, so it is generally excluded from release builds.
+
+To use the feature in release builds, add `COM_NOWSPRINTING_TEST_HELPER_ENABLE` to the "Define Symbols" at build time.
+
+
+
 ## Installation
 
 You can choose from two typical installation methods.
diff --git a/Runtime/TestHelper.Monkey.asmdef b/Runtime/TestHelper.Monkey.asmdef
index c9db582..345b094 100644
--- a/Runtime/TestHelper.Monkey.asmdef
+++ b/Runtime/TestHelper.Monkey.asmdef
@@ -13,7 +13,9 @@
     "overrideReferences": false,
     "precompiledReferences": [],
     "autoReferenced": false,
-    "defineConstraints": [],
+    "defineConstraints": [
+        "UNITY_INCLUDE_TESTS || COM_NOWSPRINTING_TEST_HELPER_ENABLE"
+    ],
     "versionDefines": [],
     "noEngineReferences": false
 }
\ No newline at end of file