diff --git a/IO.h b/IO.h
index 7a23374..c5913f1 100644
--- a/IO.h
+++ b/IO.h
@@ -65,7 +65,7 @@ private:
   arm_fir_instance_q15 m_lpFilter;
   q15_t                m_rrcState[70U];           // NoTaps + BlockSize - 1, 42 + 20 - 1 plus some spare
   q15_t                m_gaussianState[40U];      // NoTaps + BlockSize - 1, 12 + 20 - 1 plus some spare
-  q15_t                m_lpState[40U];            // NoTaps + BlockSize - 1, 10 + 20 - 1 plus some spare
+  q15_t                m_lpState[40U];            // NoTaps + BlockSize - 1, 18 + 20 - 1 plus some spare
 
   bool                 m_pttInvert;
   q15_t                m_rxLevel;