diff --git a/src/devices/radiohead_ask.c b/src/devices/radiohead_ask.c
index d822c811..a7cd3a8c 100644
--- a/src/devices/radiohead_ask.c
+++ b/src/devices/radiohead_ask.c
@@ -155,7 +155,7 @@ static int radiohead_ask_callback(r_device *decoder, bitbuffer_t *bitbuffer)
     header_flags = rh_payload[4];
 
     // Format data
-    for (int j = 0; j < msg_len; j++) {
+    for (int j = 0; j < data_len; j++) {
         rh_data_payload[j] = (int)rh_payload[5 + j];
     }
     /* clang-format off */