diff --git a/gtk/gtkstyle.c b/gtk/gtkstyle.c
index 488cfc33de..ac49234952 100644
--- a/gtk/gtkstyle.c
+++ b/gtk/gtkstyle.c
@@ -41,6 +41,7 @@
 #include "gtksettings.h"	/* _gtk_settings_parse_convert() */
 #include "gtkintl.h"
 #include "gtkalias.h"
+#include "gtkspinner.h"
 
 #define LIGHTNESS_MULT  1.3
 #define DARKNESS_MULT   0.7