1 files changed, 2 insertions, 2 deletions
diff --git a/pcapio.h b/pcapio.h
index c69a8340b2..a51d28678d 100644
--- a/pcapio.h
+++ b/pcapio.h
@@ -65,9 +65,9 @@ libpcap_write_interface_statistics_block(FILE *fp,
 
 extern gboolean
 libpcap_write_enhanced_packet_block(FILE *fp,
-                                    struct pcap_pkthdr *phdr,
+                                    const struct pcap_pkthdr *phdr,
                                     guint32 interface_id,
-                                    u_char *pd,
+                                    const u_char *pd,
                                     long *bytes_written,
                                     int *err);