diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 5ea7b94..17eb034 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -830,10 +830,10 @@
 #endif
 
 #if defined(MBEDTLS_SSL_EARLY_DATA) && defined(MBEDTLS_SSL_SRV_C) && \
-    ( !defined(MBEDTLS_SSL_MAX_EARLY_DATA_SIZE)     || \
-      ( MBEDTLS_SSL_MAX_EARLY_DATA_SIZE < 0 )       || \
-      ( MBEDTLS_SSL_MAX_EARLY_DATA_SIZE > UINT32_MAX ) )
-#error "MBEDTLS_SSL_MAX_EARLY_DATA_SIZE MUST be defined and in range(0..UINT32_MAX)"
+    defined(MBEDTLS_SSL_MAX_EARLY_DATA_SIZE) &&                      \
+        ((MBEDTLS_SSL_MAX_EARLY_DATA_SIZE < 0) ||                    \
+         (MBEDTLS_SSL_MAX_EARLY_DATA_SIZE > UINT32_MAX))
+#error "MBEDTLS_SSL_MAX_EARLY_DATA_SIZE must be in the range(0..UINT32_MAX)"
 #endif
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)     && \