diff --git a/doc/editcap.adoc b/doc/editcap.adoc
index b644e44669..35d9e8f814 100644
--- a/doc/editcap.adoc
+++ b/doc/editcap.adoc
@@ -60,7 +60,8 @@ __infile__, optionally converts them in various ways and writes the
 resulting packets to the capture __outfile__ (or outfiles).
 
 By default, it reads all packets from the __infile__ and writes them to the
-__outfile__ in pcapng file format.
+__outfile__ in pcapng file format.  Use '-' for __infile__ or __outfile__
+to read from standard input or write to standard output, respectively.
 
 The *-A* and *-B* option allow you to limit the time range from which packets
 are read from the __infile__.
@@ -184,7 +185,7 @@ If a match is found, the current packet is skipped.
 
 The use of the option *-D 0* combined with the *-v* option is useful
 in that each packet's Packet number, Len and MD5 Hash will be printed
-to standard out.  This verbose output (specifically the MD5 hash strings)
+to standard error.  This verbose output (specifically the MD5 hash strings)
 can be useful in scripts to identify duplicate packets across trace
 files.
 
diff --git a/editcap.c b/editcap.c
index 56f8acf061..f2909e01b6 100644
--- a/editcap.c
+++ b/editcap.c
@@ -736,7 +736,7 @@ print_usage(FILE *output)
     fprintf(output, "\n");
     fprintf(output, "Usage: editcap [options] ... <infile> <outfile> [ <packet#>[-<packet#>] ... ]\n");
     fprintf(output, "\n");
-    fprintf(output, "<infile> and <outfile> must both be present.\n");
+    fprintf(output, "<infile> and <outfile> must both be present; use '-' for stdin or stdout.\n");
     fprintf(output, "A single packet or a range of packets can be selected.\n");
     fprintf(output, "\n");
     fprintf(output, "Packet selection:\n");