diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index c608f47b1..a396ad54c 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -230,6 +230,9 @@ if(OPENGL_FOUND)
         target_link_libraries(testshader OpenGL::GL)
         target_link_libraries(testgl2 OpenGL::GL)
     else()
+        if(EMSCRIPTEN AND OPENGL_gl_LIBRARY STREQUAL "nul")
+            set(OPENGL_gl_LIBRARY GL)
+        endif()
         # emscripten's FindOpenGL.cmake does not create OpenGL::GL
         target_link_libraries(testshader ${OPENGL_gl_LIBRARY})
         target_link_libraries(testgl2 ${OPENGL_gl_LIBRARY})