diff --git a/radio/src/gui/colorlcd/CMakeLists.txt b/radio/src/gui/colorlcd/CMakeLists.txt
index c9589059e..d96d1f0f3 100644
--- a/radio/src/gui/colorlcd/CMakeLists.txt
+++ b/radio/src/gui/colorlcd/CMakeLists.txt
@@ -145,7 +145,7 @@ endif()
 
 option(UI_PERF_MONITOR "Draw frame rate and CPU usage" OFF)
 if(UI_PERF_MONITOR)
-  add_definition(-DUI_PERF_MONITOR)
+  add_definitions(-DUI_PERF_MONITOR)
 endif()
 
 # includes libopenui