diff --git a/boot/bootutil/src/image_validate.c b/boot/bootutil/src/image_validate.c
index 7e0af0d..7071d7d 100644
--- a/boot/bootutil/src/image_validate.c
+++ b/boot/bootutil/src/image_validate.c
@@ -48,7 +48,10 @@
 #if defined(MCUBOOT_SIGN_EC) || defined(MCUBOOT_SIGN_EC256)
 #include "mbedtls/ecdsa.h"
 #endif
+#if defined(MCUBOOT_ENC_IMAGES) || defined(MCUBOOT_SIGN_RSA) || \
+    defined(MCUBOOT_SIGN_EC) || defined(MCUBOOT_SIGN_EC256)
 #include "mbedtls/asn1.h"
+#endif
 
 #include "bootutil_priv.h"