diff --git a/src/json.c b/src/json.c
index 5ab52c5b..e2cf057d 100644
--- a/src/json.c
+++ b/src/json.c
@@ -132,7 +132,7 @@ static int new_value
             values_size = sizeof (*value->u.object.values) * value->u.object.length;
 
             if (! ((*(void **) &value->u.object.values) = json_alloc
-                  (state, values_size + ((unsigned long) value->u.object.values), 0)) )
+                  (state, values_size + ((unsigned long long) value->u.object.values), 0)) )
             {
                return 0;
             }
diff --git a/src/win32.c b/src/win32.c
index 539a5033..c00f5f9e 100644
--- a/src/win32.c
+++ b/src/win32.c
@@ -33,7 +33,7 @@ void ss_error(const char *s)
                   MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                   (LPTSTR) &msg, 0, NULL);
     if (msg != NULL) {
-        LOGE("%s: %s", s, msg);
+        LOGE("%s: %s", s, (char *)msg);
         LocalFree(msg);
     }
 }
@@ -41,7 +41,7 @@ void ss_error(const char *s)
 int setnonblocking(int fd)
 {
     u_long iMode = 0;
-    int iResult;
+    long int iResult;
     iResult = ioctlsocket(fd, FIONBIO, &iMode);
     if (iResult != NO_ERROR) {
         LOGE("ioctlsocket failed with error: %ld\n", iResult);