diff --git a/dtool/src/prc/notifyCategory.h b/dtool/src/prc/notifyCategory.h
index 9a2a9fa4e2..db767336b1 100644
--- a/dtool/src/prc/notifyCategory.h
+++ b/dtool/src/prc/notifyCategory.h
@@ -55,8 +55,8 @@ PUBLISHED:
   INLINE bool is_spam() const;
   INLINE bool is_debug() const;
 #else
-  constexpr static bool is_spam() { return false; }
-  constexpr static bool is_debug() { return false; }
+  constexpr bool is_spam() const { return false; }
+  constexpr bool is_debug() const { return false; }
 #endif
   INLINE bool is_info() const;
   INLINE bool is_warning() const;
diff --git a/dtool/src/prc/notifyCategoryProxy.I b/dtool/src/prc/notifyCategoryProxy.I
index fbdac1f0ca..ddd10b772d 100644
--- a/dtool/src/prc/notifyCategoryProxy.I
+++ b/dtool/src/prc/notifyCategoryProxy.I
@@ -65,26 +65,30 @@ is_on(NotifySeverity severity) {
 /**
  *
  */
-#ifdef NOTIFY_DEBUG
 template<class GetCategory>
 INLINE bool NotifyCategoryProxy<GetCategory>::
 is_spam() {
+#ifdef NOTIFY_DEBUG
   // Instruct the compiler to optimize for the usual case.
   return UNLIKELY(get_unsafe_ptr()->is_spam());
-}
+#else
+  return false;
 #endif
+}
 
 /**
  *
  */
-#ifdef NOTIFY_DEBUG
 template<class GetCategory>
 INLINE bool NotifyCategoryProxy<GetCategory>::
 is_debug() {
+#ifdef NOTIFY_DEBUG
   // Instruct the compiler to optimize for the usual case.
   return UNLIKELY(get_unsafe_ptr()->is_debug());
-}
+#else
+  return false;
 #endif
+}
 
 /**
  *
diff --git a/dtool/src/prc/notifyCategoryProxy.h b/dtool/src/prc/notifyCategoryProxy.h
index 5465529583..5ca79a6594 100644
--- a/dtool/src/prc/notifyCategoryProxy.h
+++ b/dtool/src/prc/notifyCategoryProxy.h
@@ -71,13 +71,8 @@ public:
 
   INLINE bool is_on(NotifySeverity severity);
 
-#if defined(NOTIFY_DEBUG) || defined(CPPPARSER)
   INLINE bool is_spam();
   INLINE bool is_debug();
-#else
-  constexpr static bool is_spam() { return false; }
-  constexpr static bool is_debug() { return false; }
-#endif
   INLINE bool is_info();
   INLINE bool is_warning();
   INLINE bool is_error();