diff --git a/dix/dix_priv.h b/dix/dix_priv.h
index 6d6402568..272e6b30f 100644
--- a/dix/dix_priv.h
+++ b/dix/dix_priv.h
@@ -554,4 +554,11 @@ int OtherClientGone(void *value, XID id);
 Bool WindowIsParent(WindowPtr parent, WindowPtr child)
     _X_ATTRIBUTE_NONNULL_ARG(1,2);
 
+/*
+ * @brief call the block handlers
+ *
+ * @param timeout   os-specific timeout value
+ */
+void BlockHandler(void *timeout);
+
 #endif /* _XSERVER_DIX_PRIV_H */
diff --git a/dix/dixutils.c b/dix/dixutils.c
index 90d591de6..359244883 100644
--- a/dix/dixutils.c
+++ b/dix/dixutils.c
@@ -334,7 +334,6 @@ static Bool handlerDeleted;
 /**
  *
  *  \param pTimeout   DIX doesn't want to know how OS represents time
- *  \param pReadMask  nor how it represents the det of descriptors
  */
 void
 BlockHandler(void *pTimeout)
diff --git a/include/dix.h b/include/dix.h
index 05cb620c3..0f5676d5e 100644
--- a/include/dix.h
+++ b/include/dix.h
@@ -179,8 +179,6 @@ extern _X_EXPORT int dixLookupFontable(FontPtr *result,
 
 extern _X_EXPORT void NoopDDA(void);
 
-extern _X_EXPORT void BlockHandler(void *timeout);
-
 extern _X_EXPORT void WakeupHandler(int result);
 
 typedef void (*ServerBlockHandlerProcPtr) (void *blockData,