diff --git a/cde/programs/dtappbuilder/src/abmf/write_c.c b/cde/programs/dtappbuilder/src/abmf/write_c.c
index f991f6061..263e57cc5 100644
--- a/cde/programs/dtappbuilder/src/abmf/write_c.c
+++ b/cde/programs/dtappbuilder/src/abmf/write_c.c
@@ -350,10 +350,10 @@ write_func_def_params(
 	va_list	va_params
 )
 {
-#if defined(__ppc) || defined(__linux__)
-#define va_start_params() __va_copy(params, va_params)
-#elif defined(CSRG_BASED)
+#if defined(va_copy) || defined(CSRG_BASED)
 #define va_start_params() va_copy(params, va_params)
+#elif defined(__ppc) || defined(__linux__)
+#define va_start_params() __va_copy(params, va_params)
 #else
 #define va_start_params() (params = va_params)
 #endif