diff --git a/src/egl/main/eglcontext.c b/src/egl/main/eglcontext.c
index 79a92c7c4a6..99d1c3e7595 100644
--- a/src/egl/main/eglcontext.c
+++ b/src/egl/main/eglcontext.c
@@ -366,7 +366,8 @@ _eglInitContext(_EGLContext *ctx, _EGLDisplay *dpy, _EGLConfig *conf,
       return EGL_FALSE;
    }
 
-   _eglInitResource(&ctx->Resource, sizeof(*ctx), dpy);
+   memset(ctx, 0, sizeof(_EGLContext));
+   _eglInitResource(&ctx->Resource, sizeof(_EGLResource), dpy);
    ctx->ClientAPI = api;
    ctx->Config = conf;
    ctx->WindowRenderBuffer = EGL_NONE;