diff --git a/src/LibBasicFunctions.h b/src/LibBasicFunctions.h
index 900794b..3fe8386 100644
--- a/src/LibBasicFunctions.h
+++ b/src/LibBasicFunctions.h
@@ -88,11 +88,11 @@ void clearAudioBlock(audio_block_t *block);
 /// @param mix float between 0.0 and 1.0.
 void alphaBlend(audio_block_t *out, audio_block_t *dry, audio_block_t* wet, float mix);
 
-/// Applies a gain to the audio via fixed-point scaling accoring to <br>
+/// Applies a gain to the audio via fixed-point scaling according to <br>
 /// out = int * (vol * 2^coeffShift)
 /// @param out pointer to output audio block
 /// @param in  pointer to input audio block
-/// @param vol volume cofficient between -1.0 and +1.0
+/// @param vol volume coefficient between -1.0 and +1.0
 /// @param coeffShift number of bits to shift the coefficient
 void gainAdjust(audio_block_t *out, audio_block_t *in, float vol, int coeffShift = 0);
 
diff --git a/src/effects/AudioEffectAnalogDelay.cpp b/src/effects/AudioEffectAnalogDelay.cpp
index f64f172..a32fc8b 100644
--- a/src/effects/AudioEffectAnalogDelay.cpp
+++ b/src/effects/AudioEffectAnalogDelay.cpp
@@ -151,7 +151,7 @@ void AudioEffectAnalogDelay::update(void)
 	transmit(blockToOutput);
 
 	release(inputAudioBlock);
-	release(m_previousBlock);
+	if (m_previousBlock) { release(m_previousBlock); }
 	m_previousBlock = blockToOutput;
 
 	if (m_blockToRelease) release(m_blockToRelease);
@@ -255,7 +255,7 @@ void AudioEffectAnalogDelay::m_postProcessing(audio_block_t *out, audio_block_t
 		memcpy(out->data, dry->data, sizeof(int16_t) * AUDIO_BLOCK_SAMPLES);
 	}
 	// Set the output volume
-	gainAdjust(out, out, m_volume, 1);
+	gainAdjust(out, out, m_volume);
 
 }