diff --git a/src/p_sectors.cpp b/src/p_sectors.cpp
index 5a60933ba..6c5c08a56 100644
--- a/src/p_sectors.cpp
+++ b/src/p_sectors.cpp
@@ -883,7 +883,7 @@ FArchive &operator<< (FArchive &arc, secspecial_t &p)
 {
 	if (SaveVersion < 4529)
 	{
-		short special;
+		int special;
 		arc << special;
 		sector_t sec;
 		P_InitSectorSpecial(&sec, special, true);
diff --git a/src/version.h b/src/version.h
index 6a0eb9c4b..b8c4facb0 100644
--- a/src/version.h
+++ b/src/version.h
@@ -76,7 +76,7 @@ const char *GetVersionString();
 
 // Use 4500 as the base git save version, since it's higher than the
 // SVN revision ever got.
-#define SAVEVER 4530
+#define SAVEVER 4531
 
 #define SAVEVERSTRINGIFY2(x) #x
 #define SAVEVERSTRINGIFY(x) SAVEVERSTRINGIFY2(x)