diff --git a/panda/src/pgraph/cacheStats.h b/panda/src/pgraph/cacheStats.h
index 5658a0472f..daeeb5340d 100644
--- a/panda/src/pgraph/cacheStats.h
+++ b/panda/src/pgraph/cacheStats.h
@@ -24,7 +24,7 @@
  */
 class EXPCL_PANDA_PGRAPH CacheStats {
 public:
-  constexpr CacheStats() = default;
+  CacheStats() = default;
   void init();
   void reset(double now);
   void write(std::ostream &out, const char *name) const;