diff --git a/platform/pocketpc.c b/platform/pocketpc.c
index 96f4a41..badb0db 100644
--- a/platform/pocketpc.c
+++ b/platform/pocketpc.c
@@ -561,6 +561,11 @@ int __PHYSFS_platformDelete(const char *path)
 } /* __PHYSFS_platformDelete */
 
 
+/*
+ * !!! FIXME: why aren't we using Critical Sections instead of Mutexes?
+ * !!! FIXME:  mutexes on Windows are for cross-process sync. CritSects are
+ * !!! FIXME:  mutexes for threads in a single process and are faster.
+ */
 void *__PHYSFS_platformCreateMutex(void)
 {
     return((void *) CreateMutex(NULL, FALSE, NULL));
diff --git a/platform/windows.c b/platform/windows.c
index e8c98f4..882c5d6 100644
--- a/platform/windows.c
+++ b/platform/windows.c
@@ -903,6 +903,11 @@ int __PHYSFS_platformDelete(const char *path)
 } /* __PHYSFS_platformDelete */
 
 
+/*
+ * !!! FIXME: why aren't we using Critical Sections instead of Mutexes?
+ * !!! FIXME:  mutexes on Windows are for cross-process sync. CritSects are
+ * !!! FIXME:  mutexes for threads in a single process and are faster.
+ */
 void *__PHYSFS_platformCreateMutex(void)
 {
     return((void *) CreateMutex(NULL, FALSE, NULL));