Fix ENTROPY_LEN check
diff --git a/include/polarssl/config.h b/include/polarssl/config.h
index 1681e1b..83aa9a3 100644
--- a/include/polarssl/config.h
+++ b/include/polarssl/config.h
@@ -2119,8 +2119,9 @@
defined(POLARSSL_CONFIG_OPTIONS) && (CTR_DRBG_ENTROPY_LEN > 64)
#error "CTR_DRBG_ENTROPY_LEN value too high"
#endif
-#if defined(POLARSSL_ENTROPY_C) && !defined(POLARSSL_SHA512_C) && \
- defined(POLARSSL_CONFIG_OPTIONS) && (CTR_DRBG_ENTROPY_LEN > 32)
+#if defined(POLARSSL_ENTROPY_C) && \
+ ( !defined(POLARSSL_SHA512_C) || defined(POLARSSL_ENTROPY_FORCE_SHA256) ) \
+ && defined(POLARSSL_CONFIG_OPTIONS) && (CTR_DRBG_ENTROPY_LEN > 32)
#error "CTR_DRBG_ENTROPY_LEN value too high"
#endif
#if defined(POLARSSL_ENTROPY_C) && \