--- a/src/dbutil.c
+++ b/src/dbutil.c
@@ -66,6 +66,10 @@
 #include "session.h"
 #include "atomicio.h"

+#ifdef DROPBEAR_NUTTX
+int execv(const char *path, char * const argv[]);
+#endif
+
 #define MAX_FMT 100

 static void generic_dropbear_exit(int exitcode, const char* format,
--- a/src/signkey.h
+++ b/src/signkey.h
@@ -150,9 +150,9 @@
 void buf_put_sign(buffer* buf, sign_key *key, enum signature_type sigtype, const buffer *data_buf);
 #if DROPBEAR_SIGNKEY_VERIFY
 int buf_verify(buffer * buf, sign_key *key, enum signature_type expect_sigtype, const buffer *data_buf);
 int sk_buf_verify(buffer * buf, sign_key *key, enum signature_type expect_sigtype, const buffer *data_buf, char* app, unsigned int applen);
-char * sign_key_fingerprint(const unsigned char* keyblob, unsigned int keybloblen);
 #endif
+char * sign_key_fingerprint(const unsigned char* keyblob, unsigned int keybloblen);
 int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen,
 					const unsigned char* algoname, unsigned int algolen,
 					const buffer * line, char ** fingerprint);