diff --git a/pitivi/ui/common.py b/pitivi/ui/common.py
index f1ae026..28504af 100644
--- a/pitivi/ui/common.py
+++ b/pitivi/ui/common.py
@@ -153,34 +153,35 @@ def model(columns, data):
     return ret
 
 frame_rates = model((str, object), (
-    (_("12 fps"), gst.Fraction(12.0, 1.0)),
-    (_("15 fps"), gst.Fraction(15.0, 1.0)),
-    (_("20 fps"), gst.Fraction(20.0, 1.0)),
-    (_("23,976 fps"), gst.Fraction(24000.0, 1001.0)),
-    (_("24 fps"), gst.Fraction(24.0, 1.0)),
-    (_("25 fps"), gst.Fraction(25.0, 1.0)),
-    (_("29,97 fps"), gst.Fraction(30000.0, 1001.0)),
-    (_("30 fps"), gst.Fraction(30.0, 1.0)),
-    (_("50 fps"), gst.Fraction(50.0, 1.0)),
-    (_("59,94 fps"), gst.Fraction(60000.0, 1001.0)),
-    (_("60 fps"), gst.Fraction(60.0, 1.0)),
-    (_("120 fps"), gst.Fraction(120.0, 1.0)),
+    # Translators: fps is frame per second
+    (_("%d fps") % 12, gst.Fraction(12.0, 1.0)),
+    (_("%d fps") % 15, gst.Fraction(15.0, 1.0)),
+    (_("%d fps") % 20, gst.Fraction(20.0, 1.0)),
+    (_("%s fps") % "23,976", gst.Fraction(24000.0, 1001.0)),
+    (_("%d fps") % 24, gst.Fraction(24.0, 1.0)),
+    (_("%d fps") % 25, gst.Fraction(25.0, 1.0)),
+    (_("%s fps") % "29,97", gst.Fraction(30000.0, 1001.0)),
+    (_("%d fps") % 30, gst.Fraction(30.0, 1.0)),
+    (_("%d fps") % 50, gst.Fraction(50.0, 1.0)),
+    (_("%s fps") % "59,94", gst.Fraction(60000.0, 1001.0)),
+    (_("%d fps") % 60, gst.Fraction(60.0, 1.0)),
+    (_("%d fps") % 120, gst.Fraction(120.0, 1.0)),
 ))
 
 audio_rates = model((str, int), (
-    (_("8 KHz"),   8000),
-    (_("11 KHz"),  11025),
-    (_("22 KHz"),  22050),
-    (_("44.1 KHz"), 44100),
-    (_("48 KHz"),  48000),
-    (_("96 KHz"),  96000)
+    (_("%d KHz") % 8,   8000),
+    (_("%d KHz") % 11,  11025),
+    (_("%d KHz") % 22,  22050),
+    (_("%.1f KHz") % 44.1, 44100),
+    (_("%d KHz") % 48,  48000),
+    (_("%d KHz") % 96,  96000)
 ))
 
 audio_depths = model((str, int), (
-    (_("8 bit"),  8),
-    (_("16 bit"), 16),
-    (_("24 bit"), 24),
-    (_("32 bit"), 32)
+    (_("%d bit") % 8,  8),
+    (_("%d bit") % 16, 16),
+    (_("%d bit") % 24, 24),
+    (_("%d bit") % 32, 32)
 ))
 
 audio_channels = model((str, int), (
diff --git a/pitivi/ui/sourcelist.py b/pitivi/ui/sourcelist.py
index 3c3b140..33f0277 100644
--- a/pitivi/ui/sourcelist.py
+++ b/pitivi/ui/sourcelist.py
@@ -237,9 +237,9 @@ class SourceList(gtk.VBox, Loggable):
         txtlabel.set_line_wrap(True)
         txtlabel.set_line_wrap_mode(pango.WRAP_WORD)
         txtlabel.set_justify(gtk.JUSTIFY_CENTER)
-        txtlabel.set_markup(
-            _("<span>Import your clips by dragging them here or "
-              "by using the buttons above.</span>"))
+        txtlabel.set_markup("<span>%s</span>" % _(
+              "Import your clips by dragging them here or "
+              "by using the buttons above."))
         self.infobar.add(txtlabel)
         self.txtlabel = txtlabel
 
diff --git a/pitivi/ui/timelinecontrols.py b/pitivi/ui/timelinecontrols.py
index 90ac15c..2e7b99a 100644
--- a/pitivi/ui/timelinecontrols.py
+++ b/pitivi/ui/timelinecontrols.py
@@ -10,11 +10,11 @@ TRACK_CONTROL_WIDTH = 75
 def track_name(track):
     stream_type = type(track.stream)
     if stream_type == stream.AudioStream:
-        return _("<b>Audio:</b>")
+        return "<b>%s</b>" % _("Audio:")
     elif stream_type == stream.VideoStream:
-        return _("<b>Video:</b>")
+        return "<b>%s</b>" % _("Video:")
     elif stream_type == stream.TextStream:
-        return _("<b>Text:</b>")
+        return "<b>%s</b>" % _("Text:")
 
 class TrackControls(gtk.Label):
     __gtype_name__ = 'TrackControls'
