diff --git a/cmake/CompileDefinitions.cmake b/cmake/CompileDefinitions.cmake
index f2a142981..68c53d7a1 100644
--- a/cmake/CompileDefinitions.cmake
+++ b/cmake/CompileDefinitions.cmake
@@ -2,11 +2,6 @@
 target_compile_definitions("raylib" PUBLIC "${PLATFORM_CPP}")
 target_compile_definitions("raylib" PUBLIC "${GRAPHICS}")
 
-if("${PLATFORM}" MATCHES "Custom")
-  target_compile_definitions("raylib" PUBLIC "PLATFORM_CUSTOM_DEFINES=\"${PLATFORM_CUSTOM_DEFINES}\"")
-  target_compile_definitions("raylib" PUBLIC "PLATFORM_CUSTOM_RCORE_IMPL=\"${PLATFORM_CUSTOM_RCORE_IMPL}\"")
-endif()
-
 function(define_if target variable)
     if (${${variable}})
         message(STATUS "${variable}=${${variable}}")