diff --git a/src/threepp/renderers/GLRenderer.cpp b/src/threepp/renderers/GLRenderer.cpp
index cdf7bcde..37ff1a3e 100644
--- a/src/threepp/renderers/GLRenderer.cpp
+++ b/src/threepp/renderers/GLRenderer.cpp
@@ -1120,7 +1120,10 @@ struct GLRenderer::Impl {
         const auto newSize = image.width * image.height * (texture.format == Format::RGB || texture.format == Format::BGR ? 3 : 4);
         data.resize(newSize);
 
+        #ifndef __EMSCRIPTEN__
+        // Only run this on desktop OpenGL, not in WebGL
         glGetTexImage(GL_TEXTURE_2D, 0, gl::toGLFormat(texture.format), gl::toGLType(texture.type), data.data());
+        #endif
 
         state.unbindTexture();
     }