diff --git a/src/internal.c b/src/internal.c
index 7e9727cf6..987e670b0 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -1048,6 +1048,7 @@ static INLINE int GetMpintToMp(mp_int* mp,
 }
 
 
+#ifndef WOLFSSH_NO_RSA
 /*
  * For the given RSA key, calculate p^-1 and q^-1. wolfCrypt's RSA
  * code expects them, but the OpenSSH format key doesn't store them.
@@ -1073,7 +1074,6 @@ static INLINE int CalcRsaInverses(RsaKey* key)
     return ret;
 }
 
-
 /*
  * Utility for GetOpenSshKey() to read in RSA keys.
  */
@@ -1105,8 +1105,10 @@ static int GetOpenSshKeyRsa(RsaKey* key,
 
     return ret;
 }
+#endif
 
 
+#if !defined(WOLFSSH_NO_ECDSA) && !defined(WOLFSSH_NO_ECC)
 /*
  * Utility for GetOpenSshKey() to read in ECDSA keys.
  */
@@ -1134,7 +1136,7 @@ static int GetOpenSshKeyEcc(ecc_key* key,
 
     return ret;
 }
-
+#endif
 
 /*
  * Decodes an OpenSSH format key.
@@ -1218,7 +1220,7 @@ static int GetOpenSshKey(WS_KeySignature *key,
                                         str, strSz, &subIdx);
                                 break;
                         #endif
-                        #ifndef WOLFSSH_NO_ECDSA
+                        #if !defined(WOLFSSH_NO_ECDSA) && !defined(WOLFSSH_NO_ECC)
                             case ID_ECDSA_SHA2_NISTP256:
                                 ret = GetOpenSshKeyEcc(&key->ks.ecc.key,
                                         str, strSz, &subIdx);
diff --git a/src/ssh.c b/src/ssh.c
index 4e3758d72..fcee2726b 100644
--- a/src/ssh.c
+++ b/src/ssh.c
@@ -1488,10 +1488,13 @@ union wolfSSH_key {
 
 static const char* PrivBeginOpenSSH = "-----BEGIN OPENSSH PRIVATE KEY-----";
 static const char* PrivEndOpenSSH = "-----END OPENSSH PRIVATE KEY-----";
-static const char* PrivBeginPrefix = "-----BEGIN ";
-/* static const char* PrivEndPrefix = "-----END "; */
-static const char* PrivSuffix = " PRIVATE KEY-----";
 
+#if !defined(NO_FILESYSTEM) && !defined(WOLFSSH_USER_FILESYSTEM)
+    /* currently only used in wolfSSH_ReadKey_file() */
+    static const char* PrivBeginPrefix = "-----BEGIN ";
+    /* static const char* PrivEndPrefix = "-----END "; */
+    static const char* PrivSuffix = " PRIVATE KEY-----";
+#endif
 
 static int DoSshPubKey(const byte* in, word32 inSz, byte** out,
         word32* outSz, const byte** outType, word32* outTypeSz,
@@ -1503,7 +1506,7 @@ static int DoSshPubKey(const byte* in, word32 inSz, byte** out,
     char* type = NULL;
     char* key = NULL;
     int ret = WS_SUCCESS;
-    word32 newKeySz, typeSz;
+    word32 newKeySz, typeSz = 0;
 
     WOLFSSH_UNUSED(inSz);
     WOLFSSH_UNUSED(heap);