diff --git a/src/pf_types.h b/src/pf_types.h
index f8255a9a..a8fef891 100644
--- a/src/pf_types.h
+++ b/src/pf_types.h
@@ -1113,7 +1113,7 @@ typedef struct pf_ppm
    uint16_t                cycle;
    uint8_t                 transfer_status;
    uint8_t                 data_status;
-   uint8_t                 buffer_length;
+   uint16_t                buffer_length;
    uint16_t                buffer_pos;          /* Start of PROFINET data in frame */
    uint16_t                cycle_counter_offset;
    uint16_t                data_status_offset;