fix /4 -> /8 for int64
diff --git a/xml/gl.xml b/xml/gl.xml
index ee48d88..9d097ab 100644
--- a/xml/gl.xml
+++ b/xml/gl.xml
@@ -20929,7 +20929,7 @@
             <param class="program"><ptype>GLuint</ptype> <name>program</name></param>
             <param><ptype>GLint</ptype> <name>location</name></param>
             <param><ptype>GLsizei</ptype> <name>bufSize</name></param>
-            <param len="bufSize / 4"><ptype>GLint64</ptype> *<name>params</name></param>
+            <param len="bufSize / 8"><ptype>GLint64</ptype> *<name>params</name></param>
         </command>
         <command>
             <proto>void <name>glGetnUniformiv</name></proto>