diff --git a/components/mbedtls/test/test_rsa.c b/components/mbedtls/test/test_rsa.c
index c10df50886..b65695147a 100644
--- a/components/mbedtls/test/test_rsa.c
+++ b/components/mbedtls/test/test_rsa.c
@@ -332,11 +332,11 @@ static void rsa_key_operations(int keysize, bool check_performance, bool use_bli
     private_perf = esp_timer_get_time() - start;
 
     if (check_performance && keysize == 2048) {
-        TEST_PERFORMANCE_LESS_THAN(RSA_2048KEY_PUBLIC_OP, "public operations %d us", public_perf);
-        TEST_PERFORMANCE_LESS_THAN(RSA_2048KEY_PRIVATE_OP, "private operations %d us", private_perf);
+        TEST_PERFORMANCE_LESS_THAN(RSA_2048KEY_PUBLIC_OP, "%d us", public_perf);
+        TEST_PERFORMANCE_LESS_THAN(RSA_2048KEY_PRIVATE_OP, "%d us", private_perf);
     } else if (check_performance && keysize == 4096) {
-        TEST_PERFORMANCE_LESS_THAN(RSA_4096KEY_PUBLIC_OP, "public operations %d us", public_perf);
-        TEST_PERFORMANCE_LESS_THAN(RSA_4096KEY_PRIVATE_OP, "private operations %d us", private_perf);
+        TEST_PERFORMANCE_LESS_THAN(RSA_4096KEY_PUBLIC_OP, "%d us", public_perf);
+        TEST_PERFORMANCE_LESS_THAN(RSA_4096KEY_PRIVATE_OP, "%d us", private_perf);
     }
 
     TEST_ASSERT_EQUAL_MEMORY_MESSAGE(orig_buf, decrypted_buf, keysize / 8, "RSA operation");
@@ -344,4 +344,4 @@ static void rsa_key_operations(int keysize, bool check_performance, bool use_bli
     mbedtls_rsa_free(&rsa);
 }
 
-#endif // CONFIG_MBEDTLS_HARDWARE_MPI
\ No newline at end of file
+#endif // CONFIG_MBEDTLS_HARDWARE_MPI