diff --git a/src/test/SDL_test_common.c b/src/test/SDL_test_common.c
index 42d45c409a..4acc40b66d 100644
--- a/src/test/SDL_test_common.c
+++ b/src/test/SDL_test_common.c
@@ -2422,6 +2422,8 @@ int SDLTest_CommonEventMainCallbacks(SDLTest_CommonState *state, const SDL_Event
     }
     case SDL_EVENT_QUIT:
         return 1;
+    default:
+        break;
     }
 
     return 0;  /* keep going */
diff --git a/test/testcamera.c b/test/testcamera.c
index d6e971bb88..51ba1d2aa5 100644
--- a/test/testcamera.c
+++ b/test/testcamera.c
@@ -202,6 +202,8 @@ int SDL_AppEvent(const SDL_Event *event)
             SDL_Log("Camera denied!");
             SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Camera permission denied!", "User denied access to the camera!", window);
             return -1;
+        default:
+            break;
     }
 
     return SDLTest_CommonEventMainCallbacks(state, event);
diff --git a/test/testhittesting.c b/test/testhittesting.c
index e65c2fa472..4de043ad16 100644
--- a/test/testhittesting.c
+++ b/test/testhittesting.c
@@ -153,6 +153,8 @@ int main(int argc, char **argv)
             case SDL_EVENT_QUIT:
                 done = 1;
                 break;
+            default:
+                break;
             }
         }
 
diff --git a/test/testhotplug.c b/test/testhotplug.c
index 3d923d3760..076177446e 100644
--- a/test/testhotplug.c
+++ b/test/testhotplug.c
@@ -155,6 +155,8 @@ int main(int argc, char *argv[])
             case SDL_EVENT_JOYSTICK_BUTTON_UP:
                 SDL_Log("Button Release: %d\n", event.jbutton.button);
                 break;
+            default:
+                break;
             }
         }
     }
diff --git a/test/testoffscreen.c b/test/testoffscreen.c
index 085071a743..59696d693a 100644
--- a/test/testoffscreen.c
+++ b/test/testoffscreen.c
@@ -74,6 +74,8 @@ static void loop(void)
         case SDL_EVENT_QUIT:
             done = SDL_TRUE;
             break;
+        default:
+            break;
         }
     }
 
diff --git a/test/testoverlay.c b/test/testoverlay.c
index 96e4c27ad0..ae5cacdd88 100644
--- a/test/testoverlay.c
+++ b/test/testoverlay.c
@@ -282,6 +282,8 @@ static void loop(void)
             if (event.key.keysym.sym != SDLK_ESCAPE) {
                 break;
             }
+        default:
+            break;
         }
     }
 
diff --git a/test/testrelative.c b/test/testrelative.c
index 40320d480c..01612ac280 100644
--- a/test/testrelative.c
+++ b/test/testrelative.c
@@ -47,6 +47,8 @@ static void loop(void)
             mouseX += event.motion.xrel;
             mouseY += event.motion.yrel;
         } break;
+        default:
+            break;
         }
     }
     for (i = 0; i < state->num_windows; ++i) {
diff --git a/test/teststreaming.c b/test/teststreaming.c
index 2c9ee7f4fc..cd1032779a 100644
--- a/test/teststreaming.c
+++ b/test/teststreaming.c
@@ -114,6 +114,8 @@ static void loop(void)
         case SDL_EVENT_QUIT:
             done = SDL_TRUE;
             break;
+        default:
+            break;
         }
     }