diff --git a/include/light/light.hh b/include/light/light.hh
index 462450a2..b2fd82c0 100644
--- a/include/light/light.hh
+++ b/include/light/light.hh
@@ -379,7 +379,7 @@ extern int write_litfile;
 extern int write_luxfile;
 extern qboolean onlyents;
 extern qboolean scaledonly;
-extern uint32_t *extended_texinfo_flags;
+extern uint64_t *extended_texinfo_flags;
 extern qboolean novisapprox;
 extern bool nolights;
 
diff --git a/light/light.cc b/light/light.cc
index 543bce91..9c6e8e6b 100644
--- a/light/light.cc
+++ b/light/light.cc
@@ -712,7 +712,7 @@ LoadExtendedTexinfoFlags(const char *sourcefilename, const bsp2_t *bsp)
     char filename[1024];
     
     // always create the zero'ed array
-    extended_texinfo_flags = (uint32_t *) calloc(bsp->numtexinfo, sizeof(uint32_t));
+    extended_texinfo_flags = static_cast<uint64_t *>(calloc(bsp->numtexinfo, sizeof(uint64_t)));
     
     strcpy(filename, sourcefilename);
     StripExtension(filename);