diff --git a/dix/dix_priv.h b/dix/dix_priv.h
index e02a6ea0a..f82188cd9 100644
--- a/dix/dix_priv.h
+++ b/dix/dix_priv.h
@@ -36,6 +36,9 @@ extern Bool touchEmulatePointer;
 
 extern HWEventQueuePtr checkForInput[2];
 
+ /* -retro mode */
+extern Bool party_like_its_1989;
+
 static inline _X_NOTSAN Bool
 InputCheckPending(void)
 {
diff --git a/include/opaque.h b/include/opaque.h
index b17380915..a89be06a7 100644
--- a/include/opaque.h
+++ b/include/opaque.h
@@ -74,6 +74,4 @@ extern _X_EXPORT Bool NoListenAll;
 
 extern _X_EXPORT Bool AllowByteSwappedClients;
 
-extern Bool party_like_its_1989; /* -retro mode */
-
 #endif                          /* OPAQUE_H */