diff --git a/changes/ticket40596 b/changes/ticket40596
new file mode 100644
index 0000000000..13c8e5b34a
--- /dev/null
+++ b/changes/ticket40596
@@ -0,0 +1,4 @@
+  o Minor bugfixes (pluggable transports, windows):
+    - Remove a warning `BUG()` that could occur when attempting to execute a
+      non-existing pluggable transport on Windows. Fixes bug 40596; bugfix on
+      0.4.0.1-alpha.
diff --git a/src/lib/process/process_win32.c b/src/lib/process/process_win32.c
index dfcb17a480..6458f93752 100644
--- a/src/lib/process/process_win32.c
+++ b/src/lib/process/process_win32.c
@@ -888,7 +888,7 @@ process_win32_read_from_handle(process_win32_handle_t *handle,
 
   /* Check if we have been asked to read from a handle that have already told
    * us that we have reached the end of the file. */
-  if (BUG(handle->reached_eof))
+  if (handle->reached_eof)
     return 0;
 
   /* This cast should be safe since our buffer can be at maximum up to