diff --git a/distrho/DistrhoDetails.hpp b/distrho/DistrhoDetails.hpp
index 60d0847db..7178bb12d 100644
--- a/distrho/DistrhoDetails.hpp
+++ b/distrho/DistrhoDetails.hpp
@@ -223,6 +223,22 @@ enum ParameterDesignation {
     kParameterDesignationBypass = 1
 };
 
+/**
+   Parameter designation symbols.@n
+   These are static, hard-coded definitions to ensure consistency across DPF and plugins.
+*/
+struct ParameterDesignationSymbols {
+   /**
+     Bypass designation symbol.
+    */
+   static constexpr const char* const bypass = "dpf_bypass";
+
+   /**
+     Bypass designation symbol, inverted for LV2 so it becomes "enabled".
+    */
+   static constexpr const char* const bypass_lv2 = "lv2_enabled";
+};
+
 /**
    Predefined Port Groups Ids.
 
@@ -731,7 +747,7 @@ struct Parameter {
             hints      = kParameterIsAutomatable|kParameterIsBoolean|kParameterIsInteger;
             name       = "Bypass";
             shortName  = "Bypass";
-            symbol     = "dpf_bypass";
+            symbol     = ParameterDesignationSymbols::bypass;
             unit       = "";
             midiCC     = 0;
             groupId    = kPortGroupNone;
@@ -749,7 +765,7 @@ struct Parameter {
  */
 static constexpr const Parameter kParameterBypass = {
     kParameterIsAutomatable|kParameterIsBoolean|kParameterIsInteger,
-    "Bypass", "Bypass", "dpf_bypass", "", "", {}, {}, 0, kPortGroupNone,
+    "Bypass", "Bypass", ParameterDesignationSymbols::bypass, "", "", {}, {}, 0, kPortGroupNone,
 };
 #endif
 
diff --git a/distrho/src/DistrhoPluginLV2export.cpp b/distrho/src/DistrhoPluginLV2export.cpp
index 00f8dc331..9f01328a8 100644
--- a/distrho/src/DistrhoPluginLV2export.cpp
+++ b/distrho/src/DistrhoPluginLV2export.cpp
@@ -91,11 +91,9 @@
 #define DISTRHO_LV2_USE_EVENTS_IN  (DISTRHO_PLUGIN_WANT_MIDI_INPUT || DISTRHO_PLUGIN_WANT_TIMEPOS || DISTRHO_PLUGIN_WANT_STATE)
 #define DISTRHO_LV2_USE_EVENTS_OUT (DISTRHO_PLUGIN_WANT_MIDI_OUTPUT || DISTRHO_PLUGIN_WANT_STATE)
 
-#define DISTRHO_BYPASS_PARAMETER_NAME "lv2_enabled"
-
 // --------------------------------------------------------------------------------------------------------------------
 
-static const char* const lv2ManifestPluginExtensionData[] = {
+static constexpr const char* const lv2ManifestPluginExtensionData[] = {
     "opts:interface",
    #if DISTRHO_PLUGIN_WANT_STATE
     LV2_STATE__interface,
@@ -110,7 +108,7 @@ static const char* const lv2ManifestPluginExtensionData[] = {
     nullptr
 };
 
-static const char* const lv2ManifestPluginOptionalFeatures[] = {
+static constexpr const char* const lv2ManifestPluginOptionalFeatures[] = {
    #if DISTRHO_PLUGIN_IS_RT_SAFE
     LV2_CORE__hardRTCapable,
    #endif
@@ -125,7 +123,7 @@ static const char* const lv2ManifestPluginOptionalFeatures[] = {
     nullptr
 };
 
-static const char* const lv2ManifestPluginRequiredFeatures[] = {
+static constexpr const char* const lv2ManifestPluginRequiredFeatures[] = {
     "opts:options",
     LV2_URID__map,
    #if DISTRHO_PLUGIN_WANT_STATE
@@ -137,7 +135,7 @@ static const char* const lv2ManifestPluginRequiredFeatures[] = {
     nullptr
 };
 
-static const char* const lv2ManifestPluginSupportedOptions[] =
+static constexpr const char* const lv2ManifestPluginSupportedOptions[] =
 {
     LV2_BUF_SIZE__nominalBlockLength,
     LV2_BUF_SIZE__maxBlockLength,
@@ -146,7 +144,7 @@ static const char* const lv2ManifestPluginSupportedOptions[] =
 };
 
 #if DISTRHO_PLUGIN_HAS_UI
-static const char* const lv2ManifestUiExtensionData[] = {
+static constexpr const char* const lv2ManifestUiExtensionData[] = {
     "opts:interface",
     "ui:idleInterface",
     "ui:showInterface",
@@ -156,7 +154,7 @@ static const char* const lv2ManifestUiExtensionData[] = {
     nullptr
 };
 
-static const char* const lv2ManifestUiOptionalFeatures[] = {
+static constexpr const char* const lv2ManifestUiOptionalFeatures[] = {
   #if DISTRHO_PLUGIN_HAS_EMBED_UI
    #if !DISTRHO_UI_USER_RESIZABLE
     "ui:noUserResize",
@@ -168,7 +166,7 @@ static const char* const lv2ManifestUiOptionalFeatures[] = {
     nullptr
 };
 
-static const char* const lv2ManifestUiRequiredFeatures[] = {
+static constexpr const char* const lv2ManifestUiRequiredFeatures[] = {
     "opts:options",
     "ui:idleInterface",
    #if DISTRHO_PLUGIN_WANT_DIRECT_ACCESS
@@ -179,7 +177,7 @@ static const char* const lv2ManifestUiRequiredFeatures[] = {
     nullptr
 };
 
-static const char* const lv2ManifestUiSupportedOptions[] = {
+static constexpr const char* const lv2ManifestUiSupportedOptions[] = {
     LV2_PARAMETERS__sampleRate,
     nullptr
 };
@@ -746,7 +744,7 @@ void lv2_generate_ttl(const char* const basename)
                     case kParameterDesignationBypass:
                         designated = true;
                         pluginString += "        lv2:name \"Enabled\" ;\n";
-                        pluginString += "        lv2:symbol \"" DISTRHO_BYPASS_PARAMETER_NAME "\" ;\n";
+                        pluginString += "        lv2:symbol \"" + String(ParameterDesignationSymbols::bypass_lv2) + "\" ;\n";
                         pluginString += "        lv2:default 1 ;\n";
                         pluginString += "        lv2:minimum 0 ;\n";
                         pluginString += "        lv2:maximum 1 ;\n";
@@ -1682,7 +1680,7 @@ void lv2_generate_ttl(const char* const basename)
 
                 if (plugin.getParameterDesignation(j) == kParameterDesignationBypass)
                 {
-                    parameterSymbol = DISTRHO_BYPASS_PARAMETER_NAME;
+                    parameterSymbol = ParameterDesignationSymbols::bypass_lv2;
                     parameterValue = 1.0f - parameterValue;
                 }
 
diff --git a/distrho/src/DistrhoUILV2.cpp b/distrho/src/DistrhoUILV2.cpp
index 990db39a5..390412e38 100644
--- a/distrho/src/DistrhoUILV2.cpp
+++ b/distrho/src/DistrhoUILV2.cpp
@@ -88,7 +88,7 @@ class UiLv2
           fController(controller),
           fWriteFunction(writeFunc),
           fURIDs(uridMap),
-          fBypassParameterIndex(fUiPortMap != nullptr ? fUiPortMap->port_index(fUiPortMap->handle, "lv2_enabled")
+          fBypassParameterIndex(fUiPortMap != nullptr ? fUiPortMap->port_index(fUiPortMap->handle, ParameterDesignationSymbols::bypass_lv2)
                                                       : LV2UI_INVALID_PORT_INDEX),
           fWinIdWasNull(winId == 0),
           fUI(this, winId, sampleRate,