diff --git a/hw/xfree86/common/xf86sbusBus.h b/hw/xfree86/common/xf86sbusBus.h
index 61a4e382d4..ee846ab918 100644
--- a/hw/xfree86/common/xf86sbusBus.h
+++ b/hw/xfree86/common/xf86sbusBus.h
@@ -77,8 +77,6 @@ extern _X_EXPORT Bool xf86SbusHandleColormaps(ScreenPtr pScreen,
 
 extern _X_EXPORT int promRootNode;
 
-extern _X_EXPORT int promGetBool(const char *prop);
-
 extern _X_EXPORT int sparcPromInit(void);
 extern _X_EXPORT void sparcPromClose(void);
 extern _X_EXPORT int sparcPromGetBool(sbusPromNodePtr pnode, const char *prop);
diff --git a/hw/xfree86/os-support/bus/Sbus.c b/hw/xfree86/os-support/bus/Sbus.c
index be1b23738a..ae4376a1cb 100644
--- a/hw/xfree86/os-support/bus/Sbus.c
+++ b/hw/xfree86/os-support/bus/Sbus.c
@@ -115,7 +115,7 @@ promGetProperty(const char *prop, int *lenp)
     return promOpio->oprom_array;
 }
 
-int
+static int
 promGetBool(const char *prop)
 {
     promOpio->oprom_size = 0;