diff --git a/src/CHANGELOG b/src/CHANGELOG
index 16a1a6971..a52d643c5 100644
--- a/src/CHANGELOG
+++ b/src/CHANGELOG
@@ -28,6 +28,8 @@ ECL 1.0:
  - There was a problem with the variable capture when creating accessors
    methods for classes.
 
+ - [Win32] Processes are now correctly listed with MP:ALL-PROCESSES (M. Goffioul)
+
 ;;; Local Variables: ***
 ;;; mode:text ***
 ;;; fill-column:79 ***
diff --git a/src/c/threads_win32.d b/src/c/threads_win32.d
index ad52258b9..04ac68aa4 100644
--- a/src/c/threads_win32.d
+++ b/src/c/threads_win32.d
@@ -229,7 +229,7 @@ mp_process_enable(cl_object process)
 		FEerror("Cannot enable the running process ~A.", 1, process);
 	THREAD_OP_LOCK();
 	code = (HANDLE)CreateThread(NULL, 0, thread_entry_point, process, 0, &threadId);
-	if (!code) {
+	if (code) {
 		/* If everything went ok, add the thread to the list. */
 		cl_core.processes = CONS(process, cl_core.processes);
 	}