diff --git a/dummyflasher.c b/dummyflasher.c
index dfdadd1..4ddf3d2 100644
--- a/dummyflasher.c
+++ b/dummyflasher.c
@@ -435,7 +435,7 @@
 {
 	struct stat image_stat;
 
-	struct emu_data *data = calloc(1, sizeof(struct emu_data));
+	struct emu_data *data = calloc(1, sizeof(*data));
 	if (!data) {
 		msg_perr("Out of memory!\n");
 		return 1;