2 files changed, 4 insertions, 4 deletions
diff --git a/pcapio.c b/pcapio.c
index cc1c8eb743..a609c2cedd 100644
--- a/pcapio.c
+++ b/pcapio.c
@@ -370,9 +370,9 @@ libpcap_write_interface_description_block(FILE *fp,
    Returns TRUE on success, FALSE on failure. */
 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)
 {
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);