diff --git a/CMakeLists.txt b/CMakeLists.txt
index a3fbb1cb3..c3a2b8740 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -242,7 +242,6 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
 endif()
 if(ANDROID)
 	set(PLATFORM_SRC android.cpp)
-	add_definitions(-DQ_OS_ANDROID)
 	set(SUBSURFACE_TARGET subsurface)
 endif()
 if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")