diff --git a/plug-ins/clipfix.ny b/plug-ins/clipfix.ny
index 8b170740b..a3cee31af 100644
--- a/plug-ins/clipfix.ny
+++ b/plug-ins/clipfix.ny
@@ -1,6 +1,7 @@
 ;nyquist plug-in
 ;version 1
 ;type process
+;preview enabled
 ;categories "http://audacityteam.org/namespace#NoiseRemoval"
 ;name "Clip Fix..."
 ;action "Reconstructing clips..."
diff --git a/plug-ins/delay.ny b/plug-ins/delay.ny
index 07d2b0674..bd99adf76 100644
--- a/plug-ins/delay.ny
+++ b/plug-ins/delay.ny
@@ -1,6 +1,7 @@
 ;nyquist plug-in
 ;version 3
 ;type process
+;preview enabled
 ;categories "http://lv2plug.in/ns/lv2core#DelayPlugin"
 ;name "Delay..."
 ;action "Applying Delay Effect..."
diff --git a/plug-ins/highpass.ny b/plug-ins/highpass.ny
index fc722dcb9..526e2f87e 100644
--- a/plug-ins/highpass.ny
+++ b/plug-ins/highpass.ny
@@ -1,6 +1,7 @@
 ;nyquist plug-in
 ;version 3
 ;type process
+;preview enabled
 ;categories "http://lv2plug.in/ns/lv2core#HighpassPlugin"
 ;name "High Pass Filter..."
 ;action "Performing High Pass Filter..."
diff --git a/plug-ins/lowpass.ny b/plug-ins/lowpass.ny
index ef6670235..5c6a5f3bc 100644
--- a/plug-ins/lowpass.ny
+++ b/plug-ins/lowpass.ny
@@ -1,6 +1,7 @@
 ;nyquist plug-in
 ;version 3
 ;type process
+;preview enabled
 ;categories "http://lv2plug.in/ns/lv2core#LowpassPlugin"
 ;name "Low Pass Filter..."
 ;action "Performing Low Pass Filter..."
diff --git a/plug-ins/notch.ny b/plug-ins/notch.ny
index a035ef5b3..1d97f19f4 100644
--- a/plug-ins/notch.ny
+++ b/plug-ins/notch.ny
@@ -1,6 +1,7 @@
 ;nyquist plug-in
 ;version 1
 ;type process
+;preview enabled
 ;categories "http://lv2plug.in/ns/lv2core/#FilterPlugin"
 ;name "Notch Filter..."
 ;action "Performing Notch Filter..."
diff --git a/plug-ins/tremolo.ny b/plug-ins/tremolo.ny
index c32fbc129..e0f7dbf43 100644
--- a/plug-ins/tremolo.ny
+++ b/plug-ins/tremolo.ny
@@ -1,6 +1,7 @@
 ;nyquist plug-in
 ;version 3
 ;type process
+;preview enabled
 ;categories "http://lv2plug.in/ns/lv2core#ModulatorPlugin"
 ;name "Tremolo..."
 ;action "Applying Tremolo..."
diff --git a/plug-ins/vocalremover.ny b/plug-ins/vocalremover.ny
index 72bbaadd1..8bc5bc192 100644
--- a/plug-ins/vocalremover.ny
+++ b/plug-ins/vocalremover.ny
@@ -1,6 +1,7 @@
 ;nyquist plug-in
 ;version 3
 ;type process
+;preview enabled
 ;categories "http://lv2plug.in/ns/lv2core#UtilityPlugin"
 ;name "Vocal Remover (for center-panned vocals)..."
 ;action "Removing vocals or other center-panned audio..."
diff --git a/plug-ins/vocoder.ny b/plug-ins/vocoder.ny
index 797b25875..213f17255 100644
--- a/plug-ins/vocoder.ny
+++ b/plug-ins/vocoder.ny
@@ -1,6 +1,7 @@
 ;nyquist plug-in
 ;version 3
 ;type process
+;preview enabled
 ;categories "http://lv2plug.in/ns/lv2core#SpectralPlugin"
 ;name "Vocoder..."
 ;action "Processing Vocoder..."