diff --git a/IDE/MDK5-ARM/Projects/CryptBenchmark/RTE/wolfSSL/user_settings.h b/IDE/MDK5-ARM/Projects/CryptBenchmark/RTE/wolfSSL/user_settings.h
index e8ba54756..b90bf7acd 100644
--- a/IDE/MDK5-ARM/Projects/CryptBenchmark/RTE/wolfSSL/user_settings.h
+++ b/IDE/MDK5-ARM/Projects/CryptBenchmark/RTE/wolfSSL/user_settings.h
@@ -18,7 +18,8 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
  */
- 
+
+#define WOLFSSL_MDK5_COMPLv5
 #define NO_MAIN_DRIVER
 #define BENCH_EMBEDDED
 #define NO_DEV_RANDOM
diff --git a/wolfcrypt/benchmark/benchmark.c b/wolfcrypt/benchmark/benchmark.c
index a6cb58e72..b03ba7c9b 100644
--- a/wolfcrypt/benchmark/benchmark.c
+++ b/wolfcrypt/benchmark/benchmark.c
@@ -3989,15 +3989,32 @@ static void bench_rsa_helper(int doAsync, RsaKey rsaKey[BENCH_MAX_PENDING],
 #ifndef WOLFSSL_RSA_VERIFY_ONLY
     DECLARE_VAR_INIT(message, byte, len, messageStr, HEAP_HINT);
 #endif
-
-    DECLARE_ARRAY_DYNAMIC(enc, byte, BENCH_MAX_PENDING, rsaKeySz, HEAP_HINT);
+    #if !defined(WOLFSSL_MDK5_COMPLv5)
+	  /* MDK5 compiler regard this as a executable statement, and does not allow declarations after the line. */
+        DECLARE_ARRAY_DYNAMIC_DEC(enc, byte, BENCH_MAX_PENDING, rsaKeySz, HEAP_HINT);
+	  #else
+	      byte* enc[BENCH_MAX_PENDING];
+	      int idxenc;
+	  #endif
     #if !defined(WOLFSSL_RSA_VERIFY_INLINE) && \
                     !defined(WOLFSSL_RSA_PUBLIC_ONLY)
-        DECLARE_ARRAY_DYNAMIC(out, byte, BENCH_MAX_PENDING, rsaKeySz, HEAP_HINT);
+        #if !defined(WOLFSSL_MDK5_COMPLv5) 
+	      /* MDK5 compiler regard this as a executable statement, and does not allow declarations after the line. */
+            DECLARE_ARRAY_DYNAMIC_DEC(out, byte, BENCH_MAX_PENDING, rsaKeySz, HEAP_HINT);
+		    #else
+		        int idxout;
+	          byte* out[BENCH_MAX_PENDING];
+        #endif
     #else
         byte* out[BENCH_MAX_PENDING];
     #endif
 
+    DECLARE_ARRAY_DYNAMIC_EXE(enc, byte, BENCH_MAX_PENDING, rsaKeySz, HEAP_HINT);
+    #if !defined(WOLFSSL_RSA_VERIFY_INLINE) && \
+                    !defined(WOLFSSL_RSA_PUBLIC_ONLY)
+        DECLARE_ARRAY_DYNAMIC_EXE(out, byte, BENCH_MAX_PENDING, rsaKeySz, HEAP_HINT);
+    #endif
+    
     if (!rsa_sign_verify) {
 #ifndef WOLFSSL_RSA_VERIFY_ONLY
         /* begin public RSA */