diff --git a/panda/src/audiotraits/globalMilesManager.h b/panda/src/audiotraits/globalMilesManager.h
index 1e6772dba5..de4c07d2ed 100644
--- a/panda/src/audiotraits/globalMilesManager.h
+++ b/panda/src/audiotraits/globalMilesManager.h
@@ -26,6 +26,10 @@
 #include "pset.h"
 #include "pmutex.h"
 
+#ifndef UINTa
+#define UINTa U32
+#endif
+
 class MilesAudioSample;
 class MilesAudioSequence;
 
diff --git a/panda/src/audiotraits/milesAudioManager.cxx b/panda/src/audiotraits/milesAudioManager.cxx
index 14f5c3e882..d3e6bc7c91 100644
--- a/panda/src/audiotraits/milesAudioManager.cxx
+++ b/panda/src/audiotraits/milesAudioManager.cxx
@@ -531,7 +531,7 @@ output(ostream &out) const {
 void MilesAudioManager::
 write(ostream &out) const {
   out << (*this) << "\n";
-  AudioSet::iterator ai;
+  AudioSet::const_iterator ai;
   for (ai = _sounds_on_loan.begin(); ai != _sounds_on_loan.end(); ++ai) {
     MilesAudioSound *sound = (*ai);
     out << "  " << *sound << "\n";