diff --git a/library/x509_crt.c b/library/x509_crt.c
index 1b1f0a7..c617c08 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -1444,7 +1444,7 @@
     }
 
 #define CERT_TYPE(type,name)                    \
-    if( ns_cert_type & type )                   \
+    if( ns_cert_type & (type) )                 \
         PRINT_ITEM( name );
 
 static int x509_info_cert_type( char **buf, size_t *size,
@@ -1471,7 +1471,7 @@
 }
 
 #define KEY_USAGE(code,name)    \
-    if( key_usage & code )      \
+    if( key_usage & (code) )    \
         PRINT_ITEM( name );
 
 static int x509_info_key_usage( char **buf, size_t *size,