diff --git a/gst/gl/gstgltestsrc.c b/gst/gl/gstgltestsrc.c
index 92b46f7d66..48f57d527b 100644
--- a/gst/gl/gstgltestsrc.c
+++ b/gst/gl/gstgltestsrc.c
@@ -43,6 +43,7 @@
 
 #include "gstgltestsrc.h"
 #include "gltestsrc.h"
+#include <gst/gst-i18n-plugin.h>
 
 #define USE_PEER_BUFFERALLOC
 
@@ -605,7 +606,7 @@ gst_gl_test_src_create (GstPushSrc* psrc, GstBuffer** buffer)
 not_negotiated:
   {
     GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
-        ("format wasn't negotiated before get function"));
+        (_("format wasn't negotiated before get function")));
     return GST_FLOW_NOT_NEGOTIATED;
   }
 eos: