diff --git a/src/corelib/global/qsystemdetection.h b/src/corelib/global/qsystemdetection.h
index 44cd6569dd9..2ec017152a4 100644
--- a/src/corelib/global/qsystemdetection.h
+++ b/src/corelib/global/qsystemdetection.h
@@ -42,6 +42,7 @@
      ANDROID  - Android platform
      HAIKU    - Haiku
      WEBOS    - LG WebOS
+     WASM     - WebAssembly
 
    The following operating systems have variants:
      LINUX    - both Q_OS_LINUX and Q_OS_ANDROID are defined when building for Android