diff --git a/gst/spectrum/gstspectrum.c b/gst/spectrum/gstspectrum.c
index 587cf8e37e..824cbb571d 100644
--- a/gst/spectrum/gstspectrum.c
+++ b/gst/spectrum/gstspectrum.c
@@ -513,8 +513,8 @@ gst_spectrum_transform_ip (GstBaseTransform * trans, GstBuffer * buffer)
     gst_spectrum_reset_state (spectrum);
   }
 
-  /* If we don't have a FFT context yet get one and
-   * allocate memory for everything
+  /* If we don't have a FFT context yet (or it was reset due to parameter
+   * changes) get one and allocate memory for everything
    */
   if (spectrum->fft_ctx == NULL) {
     spectrum->input = g_new0 (gfloat, nfft);
diff --git a/gst/spectrum/gstspectrum.h b/gst/spectrum/gstspectrum.h
index e676fd2ddb..d172f6cee3 100644
--- a/gst/spectrum/gstspectrum.h
+++ b/gst/spectrum/gstspectrum.h
@@ -59,8 +59,8 @@ struct _GstSpectrum
   guint input_pos;
   gfloat *input_tmp;
   GstFFTF32Complex *freqdata;
-  gfloat *spect_magnitude;
-  gfloat *spect_phase;
+  gfloat *spect_magnitude;      /* accumulated mangitude and phase */
+  gfloat *spect_phase;          /* will be scaled by num_fft before sending */
   GstFFTF32 *fft_ctx;
 
   guint64 error_per_interval;