diff --git a/projects/clr/rocclr/compiler/lib/complibdefs b/projects/clr/rocclr/compiler/lib/complibdefs
index 1e464b6b55..7f3c21a770 100644
--- a/projects/clr/rocclr/compiler/lib/complibdefs
+++ b/projects/clr/rocclr/compiler/lib/complibdefs
@@ -82,3 +82,6 @@ ifdef ATI_OS_LINUX
     GCXXOPTS += -fno-rtti
 endif    
 
+ifeq ($(OPENCL_USE_ONE_SC),1)
+    GCPPFLAGS += $(DEFSWITCH) OPENCL_USE_ONE_SC
+endif
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