diff --git a/i3lock.1 b/i3lock.1
index 5606983..1506e2f 100644
--- a/i3lock.1
+++ b/i3lock.1
@@ -27,8 +27,6 @@ i3lock-color \- improved screen locker
 .IR pointer\|]
 .RB [\|\-u\|]
 .RB [\|\-e\|]
-.RB [\|\-I
-.IR timeout\|]
 .RB [\|\-f\|]
 
 .SH DESCRIPTION
@@ -64,13 +62,6 @@ Don't fork after starting.
 Enable beeping. Be sure to not do this when you are about to annoy other people,
 like when opening your laptop in a boring lecture.
 
-.TP
-.BI \-I\  seconds \fR,\ \fB\-\-inactivity-timeout= seconds
-Specifies the number of seconds i3lock will wait for another password before
-turning off the monitors, in case you entered a wrong password or canceled by
-pressing Escape. Only makes sense together with \-d. If omitted, the default is
-30 seconds.
-
 .TP
 .B \-u, \-\-no-unlock-indicator
 Disable the unlock indicator. i3lock will by default show an unlock indicator
@@ -140,6 +131,8 @@ use a wrapper script around i3lock like the following:
 \&	revert
 .Ve
 
+The \-I (-\-inactivity-timeout=seconds) was removed because it only makes sense with DPMS.
+
 .SH SEE ALSO
 .IR xautolock(1)
 \- use i3lock as your screen saver
diff --git a/i3lock.c b/i3lock.c
index d53be9d..bb686e4 100644
--- a/i3lock.c
+++ b/i3lock.c
@@ -64,8 +64,6 @@ char separatorcolor[9] = "000000ff";
 int screen_number = -1;
 /* default is to use the supplied line color, 1 will be ring color, 2 will be to use the inside color for ver/wrong/etc */
 int internal_line_source = 0;
-
-int inactivity_timeout = 30;
 uint32_t last_resolution[2];
 xcb_window_t win;
 static xcb_cursor_t cursor;
@@ -854,10 +852,7 @@ int main(int argc, char *argv[]) {
                 fprintf(stderr, "DPMS support has been removed from i3lock. Please see the manpage i3lock(1).\n");
                 break;
             case 'I': {
-                int time = 0;
-                if (sscanf(optarg, "%d", &time) != 1 || time < 0)
-                    errx(EXIT_FAILURE, "invalid timeout, it must be a positive integer\n");
-                inactivity_timeout = time;
+                fprintf(stderr, "Inactivity timeout only makes sense with DPMS, which was removed. Please see the manpage i3lock(1).\n");
                 break;
             }
             case 'c': {
@@ -1036,7 +1031,7 @@ int main(int argc, char *argv[]) {
     srand(time(NULL));
 
     /* Initialize PAM */
-    if ((ret = pam_start("i3lock-color", username, &conv, &pam_handle)) != PAM_SUCCESS)
+    if ((ret = pam_start("i3lock", username, &conv, &pam_handle)) != PAM_SUCCESS)
         errx(EXIT_FAILURE, "PAM: %s", pam_strerror(pam_handle, ret));
 
     if ((ret = pam_set_item(pam_handle, PAM_TTY, getenv("DISPLAY"))) != PAM_SUCCESS)