diff --git a/cmds/flatland/Composers.cpp b/cmds/flatland/Composers.cpp
index 8365a31..15cdb29 100644
--- a/cmds/flatland/Composers.cpp
+++ b/cmds/flatland/Composers.cpp
@@ -14,6 +14,9 @@
  * limitations under the License.
  */
 
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
 #include "Flatland.h"
 #include "GLHelper.h"