diff --git a/webrtc/modules/video_render/ios/open_gles20.mm b/webrtc/modules/video_render/ios/open_gles20.mm
index 9dfa69d1b..1b7a6d175 100644
--- a/webrtc/modules/video_render/ios/open_gles20.mm
+++ b/webrtc/modules/video_render/ios/open_gles20.mm
@@ -249,6 +249,7 @@ static void InitializeTexture(int name, int id, int width, int height) {
   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
   glTexImage2D(GL_TEXTURE_2D,
                0,
                GL_LUMINANCE,