diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9d67751..489ea3e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,6 +77,11 @@ target_link_libraries(Mindball PRIVATE
 # migration warning is irrelevant.
 target_compile_definitions(Mindball PRIVATE JUCE_IGNORE_VST3_MISMATCHED_PARAMETER_ID_WARNING)
 
+# JUCE 8 defaults JUCE_VST3_CAN_REPLACE_VST2 to 1, which compiles VST2-style
+# class IDs into the plugin while the generated moduleinfo.json uses the modern
+# IDs, so hosts cannot match the class and fail to load the plugin.
+target_compile_definitions(Mindball PRIVATE JUCE_VST3_CAN_REPLACE_VST2=0)
+
 # juce_core enables libcurl by default on Linux; without NEEDS_CURL the JUCE
 # helper targets don't link -lcurl, so that would fail at link time with
 # undefined references to curl_easy_setopt. We use no network features, so