diff --git a/gpgme/w32-io.c b/gpgme/w32-io.c
index 4e2c1c9f..bfa0ad67 100644
--- a/gpgme/w32-io.c
+++ b/gpgme/w32-io.c
@@ -269,11 +269,11 @@ create_reader (HANDLE fd)
 static void
 destroy_reader (struct reader_context_s *c)
 {
-    LOCK (c->mutex)
+    LOCK (c->mutex);
     c->stop_me = 1;
     if (c->have_space_ev) 
         SetEvent (c->have_space_ev);
-    UNLOCK (c->mutex)
+    UNLOCK (c->mutex);
 
     DEBUG1 ("waiting for thread %p termination ...", c->thread_hd );
     WaitForSingleObject (c->stopped, INFINITE);
@@ -522,11 +522,11 @@ create_writer (HANDLE fd)
 static void
 destroy_writer (struct writer_context_s *c)
 {
-    LOCK (c->mutex)
+    LOCK (c->mutex);
     c->stop_me = 1;
     if (c->have_data) 
         SetEvent (c->have_data);
-    UNLOCK (c->mutex)
+    UNLOCK (c->mutex);
 
     DEBUG1 ("waiting for thread %p termination ...", c->thread_hd );
     WaitForSingleObject (c->stopped, INFINITE);