diff --git a/src/doomstat.h b/src/doomstat.h
index 1ec03a86c..0c2f1e975 100644
--- a/src/doomstat.h
+++ b/src/doomstat.h
@@ -545,7 +545,7 @@ extern recorddata_t *mainrecords[NUMMAPS];
 extern UINT8 mapvisited[NUMMAPS];
 
 // Temporary holding place for nights data for the current map
-nightsdata_t ntemprecords;
+extern nightsdata_t ntemprecords;
 
 extern UINT32 token; ///< Number of tokens collected in a level
 extern UINT32 tokenlist; ///< List of tokens collected