diff --git a/libtransmission/utils.c b/libtransmission/utils.c
index ca42a927a..855d68d37 100644
--- a/libtransmission/utils.c
+++ b/libtransmission/utils.c
@@ -485,10 +485,10 @@ tr_timevalSet( struct timeval * setme, int seconds, int microseconds )
 }
 
 void
-tr_timerAdd( struct event * timer, int seconds, int milliseconds )
+tr_timerAdd( struct event * timer, int seconds, int microseconds )
 {
     struct timeval tv;
-    tr_timevalSet( &tv, seconds, milliseconds );
+    tr_timevalSet( &tv, seconds, microseconds );
     event_add( timer, &tv );
 }
 
diff --git a/libtransmission/utils.h b/libtransmission/utils.h
index f5ec2e57d..84c3001d3 100644
--- a/libtransmission/utils.h
+++ b/libtransmission/utils.h
@@ -254,7 +254,7 @@ void tr_timevalSet( struct timeval * setme, int seconds, int microseconds );
 
 struct event;
 
-void tr_timerAdd( struct event * timer, int seconds, int milliseconds );
+void tr_timerAdd( struct event * timer, int seconds, int microseconds );
 
 
 /** @brief return the current date in milliseconds */