diff --git a/CMakeLists.txt b/CMakeLists.txt
index b505d9280..e186771e5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -167,6 +167,7 @@ if(TARGET_GLES)
     endif()
 endif()
 if(CORRADE_TARGET_EMSCRIPTEN)
+    set(TARGET_WEBGL 1)
     set(MAGNUM_TARGET_WEBGL 1)
 endif()
 if(TARGET_DESKTOP_GLES)