diff --git a/gtk/gtkcssstylefuncs.c b/gtk/gtkcssstylefuncs.c
index 00d932bbb9..6078d76427 100644
--- a/gtk/gtkcssstylefuncs.c
+++ b/gtk/gtkcssstylefuncs.c
@@ -572,7 +572,7 @@ theming_engine_value_parse (GtkCssParser *parser,
 
   if (engine == NULL)
     {
-      _gtk_css_parser_error (parser, "Themeing engine '%s' not found", str);
+      _gtk_css_parser_error (parser, "Theming engine '%s' not found", str);
       g_free (str);
       return FALSE;
     }