diff --git a/DirectXTex/DirectXTexConvert.cpp b/DirectXTex/DirectXTexConvert.cpp
index 4690481..b791556 100644
--- a/DirectXTex/DirectXTexConvert.cpp
+++ b/DirectXTex/DirectXTexConvert.cpp
@@ -4331,6 +4331,9 @@ namespace
             case DXGI_FORMAT_A8_UNORM:
                 // Conversion logic for these kinds of textures is unintuitive for WIC code paths
                 return false;
+
+            default:
+                break;
             }
             break;
 
@@ -4343,6 +4346,9 @@ namespace
             case DXGI_FORMAT_A8_UNORM:
                 // Conversion logic for these kinds of textures is unintuitive for WIC code paths
                 return false;
+
+            default:
+                break;
             }
             break;
 
@@ -4356,6 +4362,9 @@ namespace
             case DXGI_FORMAT_A8_UNORM:
                 // Conversion logic for these kinds of textures is unintuitive for WIC code paths
                 return false;
+
+            default:
+                break;
             }
         }
 
diff --git a/DirectXTex/DirectXTexMipmaps.cpp b/DirectXTex/DirectXTexMipmaps.cpp
index 3fe9cca..5d330cc 100644
--- a/DirectXTex/DirectXTexMipmaps.cpp
+++ b/DirectXTex/DirectXTexMipmaps.cpp
@@ -1303,6 +1303,9 @@ namespace
                             }
                         }
                         break;
+
+                        default:
+                            break;
                         }
 
                         // This performs any required clamping
@@ -2483,6 +2486,9 @@ namespace
                                 }
                             }
                             break;
+
+                            default:
+                                break;
                             }
 
                             // This performs any required clamping
diff --git a/DirectXTex/DirectXTexResize.cpp b/DirectXTex/DirectXTexResize.cpp
index 124e1cd..49c723f 100644
--- a/DirectXTex/DirectXTexResize.cpp
+++ b/DirectXTex/DirectXTexResize.cpp
@@ -767,6 +767,9 @@ namespace
                         }
                     }
                     break;
+
+                    default:
+                        break;
                     }
 
                     // This performs any required clamping