diff --git a/cJSON.c b/cJSON.c
index b2ba100..5c0c469 100644
--- a/cJSON.c
+++ b/cJSON.c
@@ -909,7 +909,7 @@ static char *print_value(cJSON *item, int depth, int fmt, printbuffer *p)
     }
     if (p)
     {
-        switch ((item->type) & 255)
+        switch ((item->type) & 0xFF)
         {
             case cJSON_NULL:
                 out = ensure(p, 5);
@@ -948,7 +948,7 @@ static char *print_value(cJSON *item, int depth, int fmt, printbuffer *p)
     }
     else
     {
-        switch ((item->type) & 255)
+        switch ((item->type) & 0xFF)
         {
             case cJSON_NULL:
                 out = cJSON_strdup("null");