diff --git a/Kconfig b/Kconfig
index 4157da3..fed488f 100644
--- a/Kconfig
+++ b/Kconfig
@@ -116,8 +116,9 @@
 	depends on FIT
 
 config FIT_SIGNATURE
-	bool "Enabel signature verification of FIT uImages"
+	bool "Enable signature verification of FIT uImages"
 	depends on FIT
+	select RSA
 	help
 	  This option enables signature verification of FIT uImages,
 	  using a hash signed and verified using RSA.
diff --git a/lib/Kconfig b/lib/Kconfig
index 8460439..79b91b7 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -27,4 +27,11 @@
 	  get_timer() must operate in milliseconds and this option must be
 	  set to 1000.
 
+config RSA
+	bool "Use RSA Library"
+	help
+	  RSA support. This enables the RSA algorithm used for FIT image
+	  verification in U-Boot.
+	  See doc/uImage.FIT/signature.txt for more details.
+
 endmenu