diff --git a/CMakeLists.txt b/CMakeLists.txt
index 90a1be3de..ba0bddf63 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,11 +26,6 @@ option(BUILD_SHARED_LIBS "" OFF)
 option(CHATTERINO_LTO "Enable LTO for all targets" OFF)
 option(CHATTERINO_PLUGINS "Enable EXPERIMENTAL plugin support in Chatterino" OFF)
 
-if(CHATTERINO_PLUGINS)
-    add_definitions(-DCHATTERINO_HAVE_PLUGINS)
-    message(STATUS "Building Chatterino with lua plugin support enabled.")
-endif()
-
 if(CHATTERINO_LTO)
     include(CheckIPOSupported)
     check_ipo_supported(RESULT CHATTERINO_ENABLE_LTO OUTPUT IPO_ERROR)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1ca0f6eca..bf8bf23c0 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -593,6 +593,14 @@ list(APPEND SOURCE_FILES ${RES_AUTOGEN_FILES})
 
 add_library(${LIBRARY_PROJECT} OBJECT ${SOURCE_FILES})
 
+if(CHATTERINO_PLUGINS)
+    target_compile_definitions(${LIBRARY_PROJECT}
+        PRIVATE
+        CHATTERINO_HAVE_PLUGINS
+    )
+    message(STATUS "Building Chatterino with lua plugin support enabled.")
+endif()
+
 if (CHATTERINO_GENERATE_COVERAGE)
     include(CodeCoverage)
     append_coverage_compiler_flags_to_target(${LIBRARY_PROJECT})