diff --git a/camera/camera_darwin.go b/camera/camera_darwin.go
index ea9dc3a..0cd79ca 100644
--- a/camera/camera_darwin.go
+++ b/camera/camera_darwin.go
@@ -170,6 +170,7 @@ func (c *Camera) Read() (img image.Image, err error) {
 	}
 
 	bgraToRgba(c.frame, c.rgba)
+	c.haveFrame = false
 
 	c.mu.Unlock()
 
diff --git a/camera/camera_windows_msmf.go b/camera/camera_windows_msmf.go
index b417118..5c7bc5f 100644
--- a/camera/camera_windows_msmf.go
+++ b/camera/camera_windows_msmf.go
@@ -373,6 +373,7 @@ func (c *Camera) Read() (img image.Image, err error) {
 
 	nv12ToYCbCr420(c.frame, c.stride, c.width, c.height, c.ycbcr)
 	img = c.ycbcr
+	c.haveFrame = false
 
 	c.mu.Unlock()