diff --git a/wolfcrypt/src/tfm.c b/wolfcrypt/src/tfm.c
index ca587b543..f39728546 100644
--- a/wolfcrypt/src/tfm.c
+++ b/wolfcrypt/src/tfm.c
@@ -3078,9 +3078,10 @@ int mp_cnt_lsb(fp_int* a)
 
 #if defined(HAVE_ECC) || !defined(NO_RSA) || !defined(NO_DSA)
 /* fast math conversion */
-void mp_set(fp_int *a, fp_digit b)
+int mp_set(fp_int *a, fp_digit b)
 {
     fp_set(a,b);
+    return MP_OKAY;
 }
 #endif
 
diff --git a/wolfssl/wolfcrypt/tfm.h b/wolfssl/wolfcrypt/tfm.h
index 7f51a2eae..6fe7c03bb 100644
--- a/wolfssl/wolfcrypt/tfm.h
+++ b/wolfssl/wolfcrypt/tfm.h
@@ -671,7 +671,7 @@ int mp_radix_size (mp_int * a, int radix, int *size);
 #endif
 
 #if defined(HAVE_ECC) || !defined(NO_RSA) || !defined(NO_DSA)
-    void mp_set(fp_int *a, fp_digit b);
+    int mp_set(fp_int *a, fp_digit b);
 #endif
 
 #if defined(HAVE_ECC) || defined(WOLFSSL_KEY_GEN)