diff --git a/src/iperf.h b/src/iperf.h
index 9634f62..a80b6b9 100644
--- a/src/iperf.h
+++ b/src/iperf.h
@@ -144,7 +144,6 @@ struct iperf_test
 
     /* boolean variables for Options */
     int       daemon;                           /* -D option */
-    int	      debug;                            /* -d option - debug mode */
     int       no_delay;                         /* -N option */
     int       reverse;                          /* -R option */
     int	      verbose;                          /* -V option - verbose mode */
diff --git a/src/iperf3.1 b/src/iperf3.1
index e77eca0..e99ac57 100644
--- a/src/iperf3.1
+++ b/src/iperf3.1
@@ -34,9 +34,6 @@ give more detailed output
 .BR -J ", " --json " "
 output in JSON format
 .TP
-.BR -d ", " --debug " "
-debug mode
-.TP
 .BR -v ", " --version " "
 show version information and quit
 .TP
diff --git a/src/iperf_api.c b/src/iperf_api.c
index c011e29..9779e6f 100644
--- a/src/iperf_api.c
+++ b/src/iperf_api.c
@@ -486,7 +486,6 @@ iperf_parse_arguments(struct iperf_test *test, int argc, char **argv)
         {"daemon", no_argument, NULL, 'D'},
         {"verbose", no_argument, NULL, 'V'},
         {"json", no_argument, NULL, 'J'},
-        {"debug", no_argument, NULL, 'd'},
         {"version", no_argument, NULL, 'v'},
         {"server", no_argument, NULL, 's'},
         {"client", required_argument, NULL, 'c'},
@@ -551,9 +550,6 @@ iperf_parse_arguments(struct iperf_test *test, int argc, char **argv)
             case 'J':
                 test->json_output = 1;
                 break;
-            case 'd':
-                test->debug = 1;
-                break;
             case 'v':
                 printf("%s\n", version);
 		system("uname -a");
diff --git a/src/locale.c b/src/locale.c
index 6093d36..f0df93f 100644
--- a/src/locale.c
+++ b/src/locale.c
@@ -74,7 +74,6 @@ const char usage_longstr[] = "Usage: iperf [-s|-c host] [options]\n"
                            "  -i, --interval  #         seconds between periodic bandwidth reports\n"
                            "  -V, --verbose             more detailed output\n"
                            "  -J, --json                output in JSON format\n"
-                           "  -d, --debug               debug mode\n"
                            "  -v, --version             show version information and quit\n"
                            "  -h, --help                show this message and quit\n"
                            "Server specific:\n"