diff --git a/hw/xfree86/common/xf86sbusBus.h b/hw/xfree86/common/xf86sbusBus.h
index fd726443d..0fb3f74d7 100644
--- a/hw/xfree86/common/xf86sbusBus.h
+++ b/hw/xfree86/common/xf86sbusBus.h
@@ -77,7 +77,6 @@ extern _X_EXPORT Bool xf86SbusHandleColormaps(ScreenPtr pScreen,
 
 extern _X_EXPORT int promRootNode;
 
-extern _X_EXPORT int promGetSibling(int node);
 extern _X_EXPORT int promGetChild(int node);
 extern _X_EXPORT char *promGetProperty(const char *prop, int *lenp);
 extern _X_EXPORT int promGetBool(const char *prop);
diff --git a/hw/xfree86/os-support/bus/Sbus.c b/hw/xfree86/os-support/bus/Sbus.c
index e0e6bdc47..c188c88c7 100644
--- a/hw/xfree86/os-support/bus/Sbus.c
+++ b/hw/xfree86/os-support/bus/Sbus.c
@@ -74,7 +74,7 @@ struct sbus_devtable sbusDeviceTable[] = {
     {0, 0, NULL}
 };
 
-int
+static int
 promGetSibling(int node)
 {
     promOpio->oprom_size = sizeof(int);