diff --git a/firmware/target/arm/pnx0101/system-pnx0101.c b/firmware/target/arm/pnx0101/system-pnx0101.c
index 9d8bb405a8..5708168b51 100644
--- a/firmware/target/arm/pnx0101/system-pnx0101.c
+++ b/firmware/target/arm/pnx0101/system-pnx0101.c
@@ -26,7 +26,7 @@ static struct
   unsigned char freq;
   unsigned char sys_mult;
   unsigned char sys_div;
-  unsigned char mem_conf[9];
+  unsigned char mem_conf[10];
 }
 perf_modes[3] ICONST_ATTR =
 {