diff --git a/panda/src/putil/bamCache.cxx b/panda/src/putil/bamCache.cxx
index 4854f44e03..fec5a1a02b 100644
--- a/panda/src/putil/bamCache.cxx
+++ b/panda/src/putil/bamCache.cxx
@@ -274,7 +274,7 @@ store(BamCacheRecord *record) {
   temp_file.close();
 
   // Now move the file into place.
-  if (!temp_pathname.rename_to(cache_pathname)) {
+  if (!temp_pathname.rename_to(cache_pathname) && temp_pathname.exists()) {
     cache_pathname.unlink();
     if (!temp_pathname.rename_to(cache_pathname)) {
       util_cat.error()