diff --git a/CHANGELOG.md b/CHANGELOG.md
index d28a098..d2b6763 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -88,6 +88,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   ([#156][i156])
 
 ### Changed
+- The maximum number of delaylines in the native synth was increased to 128,
+  with slight increase in memory usage ([#155][i155])
 - The numeric updown widget has a new appearance.
 - The draggable UI splitters snap more controllably to the window edges.
 - New & better presets, organized by their type to subfolders (thanks Reaby!)
@@ -312,6 +314,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 [i150]: https://github.com/vsariola/sointu/issues/150
 [i151]: https://github.com/vsariola/sointu/issues/151
 [i154]: https://github.com/vsariola/sointu/issues/154
+[i155]: https://github.com/vsariola/sointu/issues/155
 [i156]: https://github.com/vsariola/sointu/issues/156
 [i157]: https://github.com/vsariola/sointu/issues/157
 [i158]: https://github.com/vsariola/sointu/issues/158
diff --git a/vm/compiler/bridge/native_synth.go b/vm/compiler/bridge/native_synth.go
index d4f75c3..0eea423 100644
--- a/vm/compiler/bridge/native_synth.go
+++ b/vm/compiler/bridge/native_synth.go
@@ -25,8 +25,8 @@ func (s NativeSynther) Synth(patch sointu.Patch, bpm int) (sointu.Synth, error)
 
 func Synth(patch sointu.Patch, bpm int) (*NativeSynth, error) {
 	s := new(C.Synth)
-	if n := patch.NumDelayLines(); n > 64 {
-		return nil, fmt.Errorf("native bridge has currently a hard limit of 64 delaylines; patch uses %v", n)
+	if n := patch.NumDelayLines(); n > 128 {
+		return nil, fmt.Errorf("native bridge has currently a hard limit of 128 delaylines; patch uses %v", n)
 	}
 	comPatch, err := vm.NewBytecode(patch, vm.AllFeatures{}, bpm)
 	if err != nil {
@@ -124,8 +124,8 @@ func (bridgesynth *NativeSynth) Release(voice int) {
 // Update
 func (bridgesynth *NativeSynth) Update(patch sointu.Patch, bpm int) error {
 	s := (*C.Synth)(bridgesynth)
-	if n := patch.NumDelayLines(); n > 64 {
-		return fmt.Errorf("native bridge has currently a hard limit of 64 delaylines; patch uses %v", n)
+	if n := patch.NumDelayLines(); n > 128 {
+		return fmt.Errorf("native bridge has currently a hard limit of 128 delaylines; patch uses %v", n)
 	}
 	comPatch, err := vm.NewBytecode(patch, vm.AllFeatures{}, bpm)
 	if err != nil {
diff --git a/vm/compiler/templates/amd64-386/library.asm b/vm/compiler/templates/amd64-386/library.asm
index 27b0084..4f5eebe 100644
--- a/vm/compiler/templates/amd64-386/library.asm
+++ b/vm/compiler/templates/amd64-386/library.asm
@@ -2,7 +2,7 @@
 
 struc su_synth
     .synth_wrk  resb    su_synthworkspace.size
-    .delay_wrks resb    su_delayline_wrk.size * 64
+    .delay_wrks resb    su_delayline_wrk.size * 128
     .delaytimes resw    768
     .sampleoffs resb    su_sample_offset.size * 256
     .randseed   resd    1
diff --git a/vm/compiler/templates/amd64-386/library.h b/vm/compiler/templates/amd64-386/library.h
index 1776c1c..5a1d85e 100644
--- a/vm/compiler/templates/amd64-386/library.h
+++ b/vm/compiler/templates/amd64-386/library.h
@@ -38,7 +38,7 @@ typedef struct SampleOffset {
 
 typedef struct Synth {
     struct SynthWorkspace SynthWrk;
-    struct DelayWorkspace DelayWrks[64]; // let's keep this as 64 for now, so the delays take 16 meg. If that's too little or too much, we can change this in future.
+    struct DelayWorkspace DelayWrks[128]; // let's keep this as 64 for now, so the delays take 16 meg. If that's too little or too much, we can change this in future.
     unsigned short DelayTimes[768];
     struct SampleOffset SampleOffsets[256];
     unsigned int RandSeed;