diff --git a/cmake/platforms/FindPlatformGraphics.cmake b/cmake/platforms/FindPlatformGraphics.cmake
index 80ae2a320e3..af8d3341dbc 100644
--- a/cmake/platforms/FindPlatformGraphics.cmake
+++ b/cmake/platforms/FindPlatformGraphics.cmake
@@ -5,9 +5,9 @@
 # PlatformGraphics
 # ---------
 
-if(INTEGRITY)
+if(CMAKE_SYSTEM_NAME STREQUAL "Integrity")
     set(platform Integrity)
-elseif(VXWORKS)
+elseif(CMAKE_SYSTEM_NAME STREQUAL "VxWorks")
     set(platform VxWorks)
 else()
     set(PlatformGraphics_FOUND FALSE)