diff --git a/cmake/QtPlatformSupport.cmake b/cmake/QtPlatformSupport.cmake
index ac9973905af..2c5df77ba4c 100644
--- a/cmake/QtPlatformSupport.cmake
+++ b/cmake/QtPlatformSupport.cmake
@@ -16,7 +16,7 @@ set01(QNX CMAKE_SYSTEM_NAME STREQUAL "QNX") # FIXME: How to identify this?
 set01(OPENBSD CMAKE_SYSTEM_NAME STREQUAL "OpenBSD") # FIXME: How to identify this?
 set01(FREEBSD CMAKE_SYSTEM_NAME STREQUAL "FreeBSD") # FIXME: How to identify this?
 set01(NETBSD CMAKE_SYSTEM_NAME STREQUAL "NetBSD") # FIXME: How to identify this?
-set01(WASM CMAKE_SYSTEM_NAME STREQUAL "Webassembly") # FIXME: How to identify this?
+set01(WASM CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
 
 set01(BSD APPLE OR OPENBSD OR FREEBSD OR NETBSD)