diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index 953c633..fd632da 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -122,7 +122,6 @@
                          char *input_N, int radix_E, char *input_E,
                          char *result_hex_str )
 {
-    int res;
     unsigned char message_str[1000];
     unsigned char hash_result[1000];
     unsigned char output[1000];
@@ -167,6 +166,7 @@
     /* For PKCS#1 v1.5, there is an alternative way to generate signatures */
     if( padding_mode == MBEDTLS_RSA_PKCS_V15 )
     {
+        int res;
         memset( output, 0x00, 1000 );
         memset( output_str, 0x00, 1000 );
 
@@ -203,7 +203,6 @@
                            char *input_N, int radix_E, char *input_E,
                            char *result_hex_str, int correct )
 {
-    int res;
     unsigned char message_str[1000];
     unsigned char hash_result[1000];
     unsigned char result_str[1000];
@@ -240,6 +239,7 @@
     /* For PKCS#1 v1.5, there is an alternative way to verify signatures */
     if( padding_mode == MBEDTLS_RSA_PKCS_V15 )
     {
+        int res;
         int ok;
         size_t olen;