diff --git a/build/cmake/setup.h.in b/build/cmake/setup.h.in
index abc2bfba7e..c18154227b 100644
--- a/build/cmake/setup.h.in
+++ b/build/cmake/setup.h.in
@@ -631,7 +631,6 @@
 #cmakedefine01 wxUSE_THEME_MONO
 #cmakedefine01 wxUSE_THEME_WIN32
 
-
 /* --- end common options --- */
 
 /*
diff --git a/include/wx/android/setup.h b/include/wx/android/setup.h
index 485b3c11dd..af4585828d 100644
--- a/include/wx/android/setup.h
+++ b/include/wx/android/setup.h
@@ -761,7 +761,7 @@
 
 // Use the Edge (Chromium) wxWebView backend (Requires WebView2 SDK)
 //
-// Default is 0
+// Default is 0 because WebView2 is not always available, set it to 1 if you do have it.
 //
 // Recommended setting: 1 when building for Windows with WebView2 SDK
 #define wxUSE_WEBVIEW_EDGE 0
@@ -1559,7 +1559,6 @@
 #define wxUSE_THEME_MONO    0
 #define wxUSE_THEME_WIN32   0
 
-
 /* --- end common options --- */
 
 /* --- start MSW options --- */
diff --git a/include/wx/gtk/setup0.h b/include/wx/gtk/setup0.h
index 230560034a..639f912d52 100644
--- a/include/wx/gtk/setup0.h
+++ b/include/wx/gtk/setup0.h
@@ -762,7 +762,7 @@
 
 // Use the Edge (Chromium) wxWebView backend (Requires WebView2 SDK)
 //
-// Default is 0
+// Default is 0 because WebView2 is not always available, set it to 1 if you do have it.
 //
 // Recommended setting: 1 when building for Windows with WebView2 SDK
 #define wxUSE_WEBVIEW_EDGE 0
@@ -1560,7 +1560,6 @@
 #define wxUSE_THEME_MONO    0
 #define wxUSE_THEME_WIN32   0
 
-
 /* --- end common options --- */
 
 /* --- start MSW options --- */
diff --git a/include/wx/motif/setup0.h b/include/wx/motif/setup0.h
index 922189d5cb..7f7ff9eb8a 100644
--- a/include/wx/motif/setup0.h
+++ b/include/wx/motif/setup0.h
@@ -762,7 +762,7 @@
 
 // Use the Edge (Chromium) wxWebView backend (Requires WebView2 SDK)
 //
-// Default is 0
+// Default is 0 because WebView2 is not always available, set it to 1 if you do have it.
 //
 // Recommended setting: 1 when building for Windows with WebView2 SDK
 #define wxUSE_WEBVIEW_EDGE 0
@@ -1560,7 +1560,6 @@
 #define wxUSE_THEME_MONO    0
 #define wxUSE_THEME_WIN32   0
 
-
 /* --- end common options --- */
 
 #endif // _WX_SETUP_H_
diff --git a/include/wx/msw/setup0.h b/include/wx/msw/setup0.h
index 471dd40401..e7b9d06668 100644
--- a/include/wx/msw/setup0.h
+++ b/include/wx/msw/setup0.h
@@ -762,7 +762,7 @@
 
 // Use the Edge (Chromium) wxWebView backend (Requires WebView2 SDK)
 //
-// Default is 0
+// Default is 0 because WebView2 is not always available, set it to 1 if you do have it.
 //
 // Recommended setting: 1 when building for Windows with WebView2 SDK
 #define wxUSE_WEBVIEW_EDGE 0
@@ -1560,7 +1560,6 @@
 #define wxUSE_THEME_MONO    0
 #define wxUSE_THEME_WIN32   0
 
-
 /* --- end common options --- */
 
 /* --- start MSW options --- */
diff --git a/include/wx/osx/setup0.h b/include/wx/osx/setup0.h
index bcdab60411..d45ea59db7 100644
--- a/include/wx/osx/setup0.h
+++ b/include/wx/osx/setup0.h
@@ -768,7 +768,7 @@
 
 // Use the Edge (Chromium) wxWebView backend (Requires WebView2 SDK)
 //
-// Default is 0
+// Default is 0 because WebView2 is not always available, set it to 1 if you do have it.
 //
 // Recommended setting: 1 when building for Windows with WebView2 SDK
 #define wxUSE_WEBVIEW_EDGE 0
@@ -1566,7 +1566,6 @@
 #define wxUSE_THEME_MONO    0
 #define wxUSE_THEME_WIN32   0
 
-
 /* --- end common options --- */
 
 /* --- start OSX options --- */
diff --git a/include/wx/univ/setup0.h b/include/wx/univ/setup0.h
index 00f7923f77..7c2852039b 100644
--- a/include/wx/univ/setup0.h
+++ b/include/wx/univ/setup0.h
@@ -761,7 +761,7 @@
 
 // Use the Edge (Chromium) wxWebView backend (Requires WebView2 SDK)
 //
-// Default is 0
+// Default is 0 because WebView2 is not always available, set it to 1 if you do have it.
 //
 // Recommended setting: 1 when building for Windows with WebView2 SDK
 #define wxUSE_WEBVIEW_EDGE 0
@@ -1559,7 +1559,6 @@
 #define wxUSE_THEME_MONO    0
 #define wxUSE_THEME_WIN32   0
 
-
 /* --- end common options --- */
 
 /* --- start MSW options --- */
diff --git a/setup.h.in b/setup.h.in
index 6164e14d8d..26ed7a7d14 100644
--- a/setup.h.in
+++ b/setup.h.in
@@ -631,7 +631,6 @@
 #define wxUSE_THEME_MONO    0
 #define wxUSE_THEME_WIN32   0
 
-
 /* --- end common options --- */
 
 /*