diff --git a/core/fxge/agg/fx_agg_driver.cpp b/core/fxge/agg/fx_agg_driver.cpp
index fde42bb..8569208 100644
--- a/core/fxge/agg/fx_agg_driver.cpp
+++ b/core/fxge/agg/fx_agg_driver.cpp
@@ -1195,6 +1195,7 @@
       return flags;
     }
     default:
+      NOTREACHED();
       return 0;
   }
 }
diff --git a/core/fxge/skia/fx_skia_device.cpp b/core/fxge/skia/fx_skia_device.cpp
index c5b7ca0..faad434 100644
--- a/core/fxge/skia/fx_skia_device.cpp
+++ b/core/fxge/skia/fx_skia_device.cpp
@@ -1707,6 +1707,7 @@
   switch (caps_id) {
     case FXDC_DEVICE_CLASS:
       return FXDC_DISPLAY;
+
 #ifdef _SKIA_SUPPORT_
     case FXDC_PIXEL_WIDTH:
       return m_pCanvas->imageInfo().width();
@@ -1751,8 +1752,11 @@
       return flags;
     }
 #endif  // _SKIA_SUPPORT_PATHS_
+
+    default:
+      NOTREACHED();
+      return 0;
   }
-  return 0;
 }
 
 void CFX_SkiaDeviceDriver::SaveState() {
diff --git a/core/fxge/win32/fx_win32_print.cpp b/core/fxge/win32/fx_win32_print.cpp
index 6968e88..c373dad 100644
--- a/core/fxge/win32/fx_win32_print.cpp
+++ b/core/fxge/win32/fx_win32_print.cpp
@@ -403,8 +403,10 @@
       return m_HorzSize;
     case FXDC_VERT_SIZE:
       return m_VertSize;
+    default:
+      NOTREACHED();
+      return 0;
   }
-  return 0;
 }
 
 bool CPSPrinterDriver::StartRendering() {
@@ -541,8 +543,10 @@
       return m_HorzSize;
     case FXDC_VERT_SIZE:
       return m_VertSize;
+    default:
+      NOTREACHED();
+      return 0;
   }
-  return 0;
 }
 
 bool CTextOnlyPrinterDriver::SetClip_PathFill(const CFX_PathData* pPathData,