diff --git a/Modules/Compiler/ARMCC-DetermineCompiler.cmake b/Modules/Compiler/ARMCC-DetermineCompiler.cmake
index a3667d7c292af60fffb78a3f245522673c946cbd..5f2d0f846e5fb1677f2365be913cf4b77e5c9957 100644
--- a/Modules/Compiler/ARMCC-DetermineCompiler.cmake
+++ b/Modules/Compiler/ARMCC-DetermineCompiler.cmake
@@ -1,5 +1,5 @@
 # ARMCC Toolchain
-set(_compiler_id_pp_test "defined(__ARMCC_VERSION)")
+set(_compiler_id_pp_test "defined(__ARMCC_VERSION) && !defined(__clang__)")
 
 set(_compiler_id_version_compute "
 #if __ARMCC_VERSION >= 1000000