diff --git a/dvb-core/dvbdev.c b/dvb-core/dvbdev.c
index 1a91f0a..219b869 100644
--- a/dvb-core/dvbdev.c
+++ b/dvb-core/dvbdev.c
@@ -59,7 +59,7 @@ static const char * const dnames[] = {
 };
 
 #ifdef CONFIG_DVB_DYNAMIC_MINORS
-#define MAX_DVB_MINORS		256
+#define MAX_DVB_MINORS		512
 #define DVB_MAX_IDS		MAX_DVB_MINORS
 #else
 #define DVB_MAX_IDS		4