diff --git a/servers/camera/camera_feed.cpp b/servers/camera/camera_feed.cpp
index 65f876e4fd3..e326bc9af5a 100644
--- a/servers/camera/camera_feed.cpp
+++ b/servers/camera/camera_feed.cpp
@@ -172,7 +172,8 @@ CameraFeed::~CameraFeed() {
 	vs->free(texture[CameraServer::FEED_CBCR_IMAGE]);
 }
 
-void CameraFeed::set_RGB_img(Ref<Image> p_rgb_img) {
+void CameraFeed::set_RGB_img(const Ref<Image> &p_rgb_img) {
+	ERR_FAIL_COND(p_rgb_img.is_null());
 	if (active) {
 		VisualServer *vs = VisualServer::get_singleton();
 
@@ -192,7 +193,8 @@ void CameraFeed::set_RGB_img(Ref<Image> p_rgb_img) {
 	}
 }
 
-void CameraFeed::set_YCbCr_img(Ref<Image> p_ycbcr_img) {
+void CameraFeed::set_YCbCr_img(const Ref<Image> &p_ycbcr_img) {
+	ERR_FAIL_COND(p_ycbcr_img.is_null());
 	if (active) {
 		VisualServer *vs = VisualServer::get_singleton();
 
@@ -212,7 +214,9 @@ void CameraFeed::set_YCbCr_img(Ref<Image> p_ycbcr_img) {
 	}
 }
 
-void CameraFeed::set_YCbCr_imgs(Ref<Image> p_y_img, Ref<Image> p_cbcr_img) {
+void CameraFeed::set_YCbCr_imgs(const Ref<Image> &p_y_img, const Ref<Image> &p_cbcr_img) {
+	ERR_FAIL_COND(p_y_img.is_null());
+	ERR_FAIL_COND(p_cbcr_img.is_null());
 	if (active) {
 		VisualServer *vs = VisualServer::get_singleton();
 
diff --git a/servers/camera/camera_feed.h b/servers/camera/camera_feed.h
index fc41af55aca..44efbc10d12 100644
--- a/servers/camera/camera_feed.h
+++ b/servers/camera/camera_feed.h
@@ -100,9 +100,9 @@ public:
 	virtual ~CameraFeed();
 
 	FeedDataType get_datatype() const;
-	void set_RGB_img(Ref<Image> p_rgb_img);
-	void set_YCbCr_img(Ref<Image> p_ycbcr_img);
-	void set_YCbCr_imgs(Ref<Image> p_y_img, Ref<Image> p_cbcr_img);
+	void set_RGB_img(const Ref<Image> &p_rgb_img);
+	void set_YCbCr_img(const Ref<Image> &p_ycbcr_img);
+	void set_YCbCr_imgs(const Ref<Image> &p_y_img, const Ref<Image> &p_cbcr_img);
 	void allocate_texture(int p_width, int p_height, Image::Format p_format, VisualServer::TextureType p_texture_type, FeedDataType p_data_type);
 
 	virtual bool activate_feed();