diff --git a/stream/stream_dvdnav.c b/stream/stream_dvdnav.c
index a042508c2a..619284f393 100644
--- a/stream/stream_dvdnav.c
+++ b/stream/stream_dvdnav.c
@@ -475,6 +475,7 @@ static int control(stream_t *stream, int cmd, void *arg)
             break;
         if (dvdnav_angle_change(dvdnav, new_angle) != DVDNAV_STATUS_OK)
             return 1;
+        break;
     }
     case STREAM_CTRL_GET_LANG: {
         struct stream_lang_req *req = arg;
diff --git a/waftools/detections/compiler.py b/waftools/detections/compiler.py
index c9b11f5f6d..6946710900 100644
--- a/waftools/detections/compiler.py
+++ b/waftools/detections/compiler.py
@@ -41,7 +41,9 @@ def __add_generic_flags__(ctx):
                                  "-Werror=format-security",
                                  "-Wno-redundant-decls",
                                  "-Wvla",
-                                 "-Wno-format-truncation"])
+                                 "-Wno-format-truncation",
+                                 "-Wimplicit-fallthrough",
+                                 ])
 
 def __add_gcc_flags__(ctx):
     ctx.env.CFLAGS += ["-Wall", "-Wundef", "-Wmissing-prototypes", "-Wshadow",