diff --git a/src/w_wad.c b/src/w_wad.c
index 171eab4f3..c8880f693 100644
--- a/src/w_wad.c
+++ b/src/w_wad.c
@@ -1150,6 +1150,7 @@ UINT16 W_InitFolder(const char *path, boolean mainfile, boolean startup)
 	Z_Calloc(numlumps * sizeof (*wadfile->patchcache), PU_STATIC, &wadfile->patchcache);
 
 	CONS_Printf(M_GetText("Added folder %s (%u files, %u folders)\n"), fn, numlumps, foldercount);
+	wadfiles = Z_Realloc(wadfiles, sizeof(wadfile_t *) * (numwadfiles + 1), PU_STATIC, NULL);
 	wadfiles[numwadfiles] = wadfile;
 	numwadfiles++;