diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5ce8d5..d5ae9eb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -68,11 +68,15 @@ endif()
 
 add_subdirectory(${JUCE_ROOT} juce)
 
-# RMX-19 has no web view. juce_audio_processors depends on juce_gui_extra, whose
-# Linux source includes <gtk/gtk.h> and the WebKit headers unless the browser
-# component is switched off. Disabling it keeps the Linux build free of GTK and
-# WebKit (and of native file-chooser dialogs, which this plug-in never uses).
-add_compile_definitions(JUCE_WEB_BROWSER=0)
+# RMX-19 has no web UI and does no networking.
+#  - JUCE_WEB_BROWSER=0: juce_audio_processors depends on juce_gui_extra, whose
+#    Linux source includes <gtk/gtk.h> and the WebKit headers unless the browser
+#    component is switched off. This keeps the Linux build free of GTK/WebKit
+#    (and of native file-chooser dialogs, which this plug-in never uses).
+#  - JUCE_USE_CURL=0: juce_core otherwise compiles libcurl-backed code, which
+#    fails to link on Linux (curl_* undefined) unless libcurl is linked in.
+#    JUCE falls back to its own socket-based implementation.
+add_compile_definitions(JUCE_WEB_BROWSER=0 JUCE_USE_CURL=0)
 
 # AU is only buildable on Apple; on Linux (and everywhere else) ship VST3.
 if(APPLE)
diff --git a/README.md b/README.md
index addd353..6875621 100644
--- a/README.md
+++ b/README.md
@@ -217,10 +217,11 @@ Linux:
 - CMake ≥ 3.22, a C++17 compiler (GCC or Clang), `git`, `pkg-config`
 - Development packages used by JUCE (Debian/Ubuntu):
   `libasound2-dev libx11-dev libxext-dev libxinerama-dev libxrandr-dev`
-  `libxcursor-dev libxcomposite-dev libfreetype6-dev libfontconfig1-dev
-  libcurl4-openssl-dev libgl1-mesa-dev`
-- No GTK/WebKit packages are needed: the plug-in does not use the web browser,
-  native file-chooser dialogs, or `<gtk/gtk.h>`.
+  `libxcursor-dev libxcomposite-dev libfreetype6-dev libfontconfig1-dev`
+  `libgl1-mesa-dev`
+- No GTK/WebKit or libcurl packages are needed: the plug-in does not use the web
+  browser, native file-chooser dialogs, `<gtk/gtk.h>`, or networking
+  (`JUCE_WEB_BROWSER=0`, `JUCE_USE_CURL=0`).
 
 The build fetches **JUCE 8.0.4** automatically into `build/JUCE` on first
 configure - no manual JUCE setup is required.