diff --git a/include/mbedtls/platform_util.h b/include/mbedtls/platform_util.h
index 7e04c4f22..a90c10a4a 100644
--- a/include/mbedtls/platform_util.h
+++ b/include/mbedtls/platform_util.h
@@ -201,6 +201,13 @@ MBEDTLS_DEPRECATED typedef int mbedtls_deprecated_numeric_constant_t;
  */
 #define MBEDTLS_CHECK_RETURN_OPTIONAL
 
+/** \def MBEDTLS_IGNORE_RETURN
+ *
+ * Silences warning about unused return value given by functions
+ * with \c MBEDTLS_CHECK_RETURN attribute.
+ */
+#define MBEDTLS_IGNORE_RETURN(result) if( result ) {}
+
 /**
  * \brief       Securely zeroize a buffer
  *
diff --git a/library/aes.c b/library/aes.c
index e4bcfa023..609f852d5 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -926,7 +926,7 @@ void mbedtls_aes_encrypt( mbedtls_aes_context *ctx,
                           const unsigned char input[16],
                           unsigned char output[16] )
 {
-    mbedtls_internal_aes_encrypt( ctx, input, output );
+    MBEDTLS_IGNORE_RETURN( mbedtls_internal_aes_encrypt( ctx, input, output ) );
 }
 #endif /* !MBEDTLS_DEPRECATED_REMOVED */
 
@@ -999,7 +999,7 @@ void mbedtls_aes_decrypt( mbedtls_aes_context *ctx,
                           const unsigned char input[16],
                           unsigned char output[16] )
 {
-    mbedtls_internal_aes_decrypt( ctx, input, output );
+    MBEDTLS_IGNORE_RETURN( mbedtls_internal_aes_decrypt( ctx, input, output ) );
 }
 #endif /* !MBEDTLS_DEPRECATED_REMOVED */