diff --git a/lib/inet_pton.c b/lib/inet_pton.c
index 26a13724f..285284fd1 100644
--- a/lib/inet_pton.c
+++ b/lib/inet_pton.c
@@ -221,8 +221,8 @@ inet_pton6(const char *src, unsigned char *dst)
      * Since some memmove()'s erroneously fail to handle
      * overlapping regions, we'll do the shift by hand.
      */
-    const int n = tp - colonp;
-    int i;
+    const long n = tp - colonp;
+    long i;
 
     for (i = 1; i <= n; i++) {
       endp[- i] = colonp[n - i];
diff --git a/lib/ssluse.c b/lib/ssluse.c
index 840fbc2c9..d0f5501fe 100644
--- a/lib/ssluse.c
+++ b/lib/ssluse.c
@@ -1644,9 +1644,16 @@ ossl_connect_step2(struct connectdata *conn, int sockindex)
 
 static int asn1_object_dump(ASN1_OBJECT *a, char *buf, size_t len)
 {
-  int i = i2t_ASN1_OBJECT(buf, len, a);
-  if (i >= (int)len)
-    return 1; /* too small buffer! */
+  int i, ilen;
+
+  if((ilen = (int)len) < 0)
+    return 1; /* buffer too big */
+
+  i = i2t_ASN1_OBJECT(buf, ilen, a);
+
+  if(i >= ilen)
+    return 1; /* buffer too small */
+
   return 0;
 }
 
@@ -2244,9 +2251,9 @@ ossl_connect_common(struct connectdata *conn,
     if(connssl->connecting_state == ssl_connect_2_reading
         || connssl->connecting_state == ssl_connect_2_writing) {
 
-      int writefd = ssl_connect_2_writing==
+      curl_socket_t writefd = ssl_connect_2_writing==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
-      int readfd = ssl_connect_2_reading==
+      curl_socket_t readfd = ssl_connect_2_reading==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
 
       while(1) {
diff --git a/lib/url.c b/lib/url.c
index e22ddee6e..d1393d2e6 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -3176,13 +3176,13 @@ static CURLcode ParseURLAndFillConnection(struct SessionHandle *data,
     char *percent = strstr (conn->host.name, "%25");
     if (percent) {
       char *endp;
-      unsigned int scope = strtoul (percent + 3, &endp, 10);
+      unsigned long scope = strtoul (percent + 3, &endp, 10);
       if (*endp == ']') {
         /* The address scope was well formed.  Knock it out of the hostname.  */
         memmove(percent, endp, strlen(endp)+1);
         if (!data->state.this_is_a_follow)
           /* Don't honour a scope given in a Location: header */
-          conn->scope = scope;
+          conn->scope = (unsigned int)scope;
       } else
         infof(data, "Invalid IPv6 address format\n");
     }