diff --git a/plugins/Makefile b/plugins/Makefile
index 8796b1a..73a6ec8 100644
--- a/plugins/Makefile
+++ b/plugins/Makefile
@@ -490,9 +490,12 @@ BOGAUDIO_CUSTOM_PER_FILE = ARQuantity AttackMenuItem ReleaseMenuItem
 # --------------------------------------------------------------
 # ChowDSP
 
+# FIXME
+ifneq ($(WASM),true)
 PLUGIN_FILES += $(wildcard ChowDSP/src/*/*.cpp)
 PLUGIN_FILES += $(wildcard ChowDSP/src/*/*/*.cpp)
 PLUGIN_FILES += $(wildcard ChowDSP/lib/r8lib/*.cpp)
+endif
 
 # --------------------------------------------------------------
 # CatroModulo
@@ -825,6 +828,8 @@ UNLESS_MODULES_CUSTOM = Selection
 # --------------------------------------------------------------
 # ValleyAudio
 
+# FIXME
+ifneq ($(WASM),true)
 PLUGIN_FILES += $(filter-out ValleyAudio/src/Valley.cpp,$(wildcard ValleyAudio/src/*.cpp))
 PLUGIN_FILES += $(wildcard ValleyAudio/src/*/*.cpp)
 PLUGIN_FILES += $(wildcard ValleyAudio/src/*/*/*.cpp)
@@ -897,6 +902,7 @@ PLUGIN_BINARIES += ValleyAudio/src/XFADE.bin
 # modules/types which are present in other plugins
 VALLEYAUDIO_CUSTOM = $(DRWAV) DigitalDisplay
 VALLEYAUDIO_CUSTOM_PER_FILE = TempoKnob
+endif
 
 # --------------------------------------------------------------
 # Voxglitch
diff --git a/plugins/plugins.cpp b/plugins/plugins.cpp
index b38d1b6..91195b4 100644
--- a/plugins/plugins.cpp
+++ b/plugins/plugins.cpp
@@ -1622,6 +1622,8 @@ static void initStatic__cf()
     }
 }
 
+// FIXME
+#ifndef DISTRHO_OS_WASM
 static void initStatic__ChowDSP()
 {
     Plugin* const p = new Plugin;
@@ -1648,6 +1650,7 @@ static void initStatic__ChowDSP()
         p->addModel(modelChowChorus);
     }
 }
+#endif
 
 static void initStatic__DrumKit()
 {
@@ -2586,6 +2589,8 @@ static void initStatic__unless_modules()
     }
 }
 
+// FIXME
+#ifndef DISTRHO_OS_WASM
 static void initStatic__ValleyAudio()
 {
     Plugin* const p = new Plugin;
@@ -2604,6 +2609,7 @@ static void initStatic__ValleyAudio()
         p->addModel(modelTerrorform);
     }
 }
+#endif
 
 static void initStatic__Voxglitch()
 {
@@ -2719,7 +2725,10 @@ void initStaticPlugins()
     initStatic__BogaudioModules();
     initStatic__CatroModulo();
     initStatic__cf();
+// FIXME
+#ifndef DISTRHO_OS_WASM
     initStatic__ChowDSP();
+#endif
     initStatic__DrumKit();
     initStatic__ESeries();
     initStatic__ExpertSleepersEncoders();
@@ -2759,7 +2768,10 @@ void initStaticPlugins()
     initStatic__sonusmodular();
     initStatic__stocaudio();
     initStatic__unless_modules();
+// FIXME
+#ifndef DISTRHO_OS_WASM
     initStatic__ValleyAudio();
+#endif
     initStatic__Voxglitch();
     initStatic__WhatTheRack();
     initStatic__ZetaCarinaeModules();