diff --git a/include/wx/mac/setup0.h b/include/wx/mac/setup0.h
index 3da7d93d0e..4fb97a6385 100644
--- a/include/wx/mac/setup0.h
+++ b/include/wx/mac/setup0.h
@@ -156,11 +156,11 @@
 // (Windows 9x doesn't support it and the programs compiled in Unicode mode
 // will not run under 9x -- but see wxUSE_UNICODE_MSLU below).
 //
-// Default is 1
+// Default is 0 (but only because of makefiles)
 //
 // Recommended setting: 1
 #ifndef wxUSE_UNICODE
-    #define wxUSE_UNICODE 1
+    #define wxUSE_UNICODE 0
 #endif
 
 // Setting wxUSE_WCHAR_T to 1 gives you some degree of Unicode support without
diff --git a/include/wx/motif/setup0.h b/include/wx/motif/setup0.h
index 20494c37cf..c7aafa9c34 100644
--- a/include/wx/motif/setup0.h
+++ b/include/wx/motif/setup0.h
@@ -155,11 +155,11 @@
 // (Windows 9x doesn't support it and the programs compiled in Unicode mode
 // will not run under 9x -- but see wxUSE_UNICODE_MSLU below).
 //
-// Default is 1
+// Default is 0 (but only because of makefiles)
 //
 // Recommended setting: 1
 #ifndef wxUSE_UNICODE
-    #define wxUSE_UNICODE 1
+    #define wxUSE_UNICODE 0
 #endif
 
 // Setting wxUSE_WCHAR_T to 1 gives you some degree of Unicode support without
diff --git a/include/wx/msw/setup0.h b/include/wx/msw/setup0.h
index 60ddea641c..aa0e083733 100644
--- a/include/wx/msw/setup0.h
+++ b/include/wx/msw/setup0.h
@@ -155,11 +155,11 @@
 // (Windows 9x doesn't support it and the programs compiled in Unicode mode
 // will not run under 9x -- but see wxUSE_UNICODE_MSLU below).
 //
-// Default is 1
+// Default is 0 (but only because of makefiles)
 //
 // Recommended setting: 1
 #ifndef wxUSE_UNICODE
-    #define wxUSE_UNICODE 1
+    #define wxUSE_UNICODE 0
 #endif
 
 // Setting wxUSE_WCHAR_T to 1 gives you some degree of Unicode support without
diff --git a/include/wx/msw/wince/setup.h b/include/wx/msw/wince/setup.h
index f6ae98ad95..121938f88d 100644
--- a/include/wx/msw/wince/setup.h
+++ b/include/wx/msw/wince/setup.h
@@ -155,11 +155,11 @@
 // (Windows 9x doesn't support it and the programs compiled in Unicode mode
 // will not run under 9x -- but see wxUSE_UNICODE_MSLU below).
 //
-// Default is 1
+// Default is 0 (but only because of makefiles)
 //
 // Recommended setting: 1
 #ifndef wxUSE_UNICODE
-    #define wxUSE_UNICODE 1
+    #define wxUSE_UNICODE 0
 #endif
 
 // Setting wxUSE_WCHAR_T to 1 gives you some degree of Unicode support without
diff --git a/include/wx/os2/setup0.h b/include/wx/os2/setup0.h
index 99492845f3..e0235ba107 100644
--- a/include/wx/os2/setup0.h
+++ b/include/wx/os2/setup0.h
@@ -155,11 +155,11 @@
 // (Windows 9x doesn't support it and the programs compiled in Unicode mode
 // will not run under 9x -- but see wxUSE_UNICODE_MSLU below).
 //
-// Default is 1
+// Default is 0 (but only because of makefiles)
 //
 // Recommended setting: 1
 #ifndef wxUSE_UNICODE
-    #define wxUSE_UNICODE 1
+    #define wxUSE_UNICODE 0
 #endif
 
 // Setting wxUSE_WCHAR_T to 1 gives you some degree of Unicode support without
diff --git a/include/wx/palmos/setup0.h b/include/wx/palmos/setup0.h
index 743f52daf1..a893ea9725 100644
--- a/include/wx/palmos/setup0.h
+++ b/include/wx/palmos/setup0.h
@@ -155,11 +155,11 @@
 // (Windows 9x doesn't support it and the programs compiled in Unicode mode
 // will not run under 9x -- but see wxUSE_UNICODE_MSLU below).
 //
-// Default is 1
+// Default is 0 (but only because of makefiles)
 //
 // Recommended setting: 1
 #ifndef wxUSE_UNICODE
-    #define wxUSE_UNICODE 1
+    #define wxUSE_UNICODE 0
 #endif
 
 // Setting wxUSE_WCHAR_T to 1 gives you some degree of Unicode support without
diff --git a/include/wx/setup_inc.h b/include/wx/setup_inc.h
index 2caa6b0108..0d54483d10 100644
--- a/include/wx/setup_inc.h
+++ b/include/wx/setup_inc.h
@@ -151,11 +151,11 @@
 // (Windows 9x doesn't support it and the programs compiled in Unicode mode
 // will not run under 9x -- but see wxUSE_UNICODE_MSLU below).
 //
-// Default is 1
+// Default is 0 (but only because of makefiles)
 //
 // Recommended setting: 1
 #ifndef wxUSE_UNICODE
-    #define wxUSE_UNICODE 1
+    #define wxUSE_UNICODE 0
 #endif
 
 // Setting wxUSE_WCHAR_T to 1 gives you some degree of Unicode support without