diff --git a/midi_gate-psi.lv2/midi_gate_ui.cxx b/midi_gate-psi.lv2/midi_gate_ui.cxx
index e0be2d4..c63cf95 100644
--- a/midi_gate-psi.lv2/midi_gate_ui.cxx
+++ b/midi_gate-psi.lv2/midi_gate_ui.cxx
@@ -43,7 +43,7 @@ typedef struct {
   LV2UI_Controller controller;
 } MidiGateGUI;
 
-static LV2UI_Handle instantiate(const struct _LV2UI_Descriptor * descriptor,
+static LV2UI_Handle instantiate(const struct LV2UI_Descriptor * descriptor,
                                 const char * plugin_uri,
                                 const char * bundle_path,
                                 LV2UI_Write_Function write_function,
@@ -158,7 +158,7 @@ static const void* extension_data(const char* uri) {
   return NULL;
 }
 
-static LV2UI_Descriptor descriptors[] = {
+static const LV2UI_Descriptor descriptors[] = {
   {MIDIGATE_UI_URI, instantiate, cleanup, port_event, extension_data}
 };
 
diff --git a/sidechain_gate-psi.lv2/sidechain_gate_ui.cxx b/sidechain_gate-psi.lv2/sidechain_gate_ui.cxx
index 988555f..878082f 100644
--- a/sidechain_gate-psi.lv2/sidechain_gate_ui.cxx
+++ b/sidechain_gate-psi.lv2/sidechain_gate_ui.cxx
@@ -37,7 +37,7 @@ typedef struct {
   LV2UI_Controller controller;
 } SidechainGateGUI;
 
-static LV2UI_Handle instantiate(const struct _LV2UI_Descriptor * descriptor,
+static LV2UI_Handle instantiate(const struct LV2UI_Descriptor * descriptor,
                                 const char * plugin_uri,
                                 const char * bundle_path,
                                 LV2UI_Write_Function write_function,
@@ -187,7 +187,7 @@ static const void* extension_data(const char* uri) {
   return NULL;
 }
 
-static LV2UI_Descriptor descriptors[] = {
+static const LV2UI_Descriptor descriptors[] = {
   {SCGATE_UI_URI, instantiate, cleanup, port_event, extension_data}
 };
 
diff --git a/super_welle.lv2/super_welle_ui.cxx b/super_welle.lv2/super_welle_ui.cxx
index aee9703..c5c3b7a 100644
--- a/super_welle.lv2/super_welle_ui.cxx
+++ b/super_welle.lv2/super_welle_ui.cxx
@@ -55,7 +55,7 @@ typedef struct {
 
 uint8_t update_ui = 0;
 
-static LV2UI_Handle instantiate(const struct _LV2UI_Descriptor * descriptor,
+static LV2UI_Handle instantiate(const struct LV2UI_Descriptor * descriptor,
                                 const char * plugin_uri,
                                 const char * bundle_path,
                                 LV2UI_Write_Function write_function,
@@ -748,7 +748,7 @@ static const void* extension_data(const char* uri) {
   return NULL;
 }
 
-static LV2UI_Descriptor descriptors[] = {
+static const LV2UI_Descriptor descriptors[] = {
   {SW_UI_URI, instantiate, cleanup, port_event, extension_data}
 };