diff --git a/gst/volume/gstvolume.c b/gst/volume/gstvolume.c
index b4adec6ee5..5ed22387b2 100644
--- a/gst/volume/gstvolume.c
+++ b/gst/volume/gstvolume.c
@@ -144,11 +144,11 @@ volume_parse_caps (GstVolume *filter, GstCaps *caps)
   
   if (strcmp(format, "int")==0) {
     filter->format        = GST_VOLUME_FORMAT_INT;
-    gst_caps_get_int (caps, "width",      &filter->width);
-    gst_caps_get_int (caps, "depth",      &filter->depth);
-    gst_caps_get_int (caps, "law",        &filter->law);
-    gst_caps_get_int (caps, "endianness", &filter->endianness);
-    gst_caps_get_int (caps, "signed",     &filter->is_signed);
+    gst_caps_get_int	 (caps, "width",      &filter->width);
+    gst_caps_get_int	 (caps, "depth",      &filter->depth);
+    gst_caps_get_int	 (caps, "law",        &filter->law);
+    gst_caps_get_int	 (caps, "endianness", &filter->endianness);
+    gst_caps_get_boolean (caps, "signed",     &filter->is_signed);
     
     if (!filter->silent) {
       g_print ("Volume : channels %d, rate %d\n",