diff --git a/lsmmc.c b/lsmmc.c
index c984d9a..9596722 100644
--- a/lsmmc.c
+++ b/lsmmc.c
@@ -1826,6 +1826,9 @@
 	int block_len = 1 << read_bl_len;
 	unsigned long long memory_capacity;
 
+	if (c_size == 0xfff)
+		return;
+
 	printf("\tC_SIZE: 0x%03x\n", c_size);
 	printf("\tC_SIZE_MULT: 0x%01x\n", c_size_mult);