diff --git a/mediapipe/objc/MPPLayerRenderer.m b/mediapipe/objc/MPPLayerRenderer.m
index 7c3027fb6..edd2216ee 100644
--- a/mediapipe/objc/MPPLayerRenderer.m
+++ b/mediapipe/objc/MPPLayerRenderer.m
@@ -54,10 +54,11 @@
   glGenRenderbuffers(1, &renderbuffer_);
   glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer_);
   glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuffer_);
-  BOOL success = [_glRenderer.glContext renderbufferStorage:GL_RENDERBUFFER fromDrawable:_layer];
+  BOOL success __unused = [_glRenderer.glContext renderbufferStorage:GL_RENDERBUFFER
+                                                        fromDrawable:_layer];
   NSAssert(success, @"could not create renderbuffer storage for layer with bounds %@",
            NSStringFromCGRect(_layer.bounds));
-  GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+  GLenum status __unused = glCheckFramebufferStatus(GL_FRAMEBUFFER);
   NSAssert(status == GL_FRAMEBUFFER_COMPLETE,
           @"failed to make complete framebuffer object %x", status);
 }