diff --git a/lib/mbedtls/Kconfig b/lib/mbedtls/Kconfig
index 262abb2..8e3a94c 100644
--- a/lib/mbedtls/Kconfig
+++ b/lib/mbedtls/Kconfig
@@ -164,6 +164,18 @@
 	  This option enables support of hashing using SHA256 algorithm
 	  with MbedTLS crypto library.
 
+if SHA256_MBEDTLS
+
+config SHA256_SMALLER
+	bool "Enable SHA256 smaller implementation with MbedTLS crypto library"
+	depends on SHA256_MBEDTLS
+	default y if SHA256_MBEDTLS
+	help
+	  This option enables support of hashing using SHA256 algorithm
+	  smaller implementation with MbedTLS crypto library.
+
+endif
+
 config SHA512_MBEDTLS
 	bool "Enable SHA512 support with MbedTLS crypto library"
 	depends on MBEDTLS_LIB_CRYPTO && SHA512
@@ -172,6 +184,18 @@
 	  This option enables support of hashing using SHA512 algorithm
 	  with MbedTLS crypto library.
 
+if SHA512_MBEDTLS
+
+config SHA512_SMALLER
+	bool "Enable SHA512 smaller implementation with MbedTLS crypto library"
+	depends on SHA512_MBEDTLS
+	default y if SHA512_MBEDTLS
+	help
+	  This option enables support of hashing using SHA512 algorithm
+	  smaller implementation with MbedTLS crypto library.
+
+endif
+
 config SHA384_MBEDTLS
 	bool "Enable SHA384 support with MbedTLS crypto library"
 	depends on MBEDTLS_LIB_CRYPTO && SHA384