diff --git a/samples/webrequest/webrequest.cpp b/samples/webrequest/webrequest.cpp
index 3a16eda371..95ce7a4261 100644
--- a/samples/webrequest/webrequest.cpp
+++ b/samples/webrequest/webrequest.cpp
@@ -10,10 +10,6 @@
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"
 
-#ifdef __BORLANDC__
-    #pragma hdrstop
-#endif
-
 #ifndef WX_PRECOMP
     #include "wx/wx.h"
 #endif
@@ -29,6 +25,10 @@
     #include "../sample.xpm"
 #endif
 
+#if !wxUSE_WEBREQUEST
+#error "wxUSE_WEBREQUEST must be 1 for this sample."
+#endif
+
 class WebRequestFrame : public wxFrame
 {
 public:
diff --git a/src/common/webrequest_curl.cpp b/src/common/webrequest_curl.cpp
index 17dc62b13d..79cc8d502c 100644
--- a/src/common/webrequest_curl.cpp
+++ b/src/common/webrequest_curl.cpp
@@ -12,7 +12,7 @@
 
 #include "wx/webrequest.h"
 
-#if wxUSE_WEBREQUEST_CURL
+#if wxUSE_WEBREQUEST && wxUSE_WEBREQUEST_CURL
 
 #include "wx/private/webrequest_curl.h"
 
diff --git a/src/msw/webrequest_winhttp.cpp b/src/msw/webrequest_winhttp.cpp
index 11f8197118..0f3c35a8b3 100644
--- a/src/msw/webrequest_winhttp.cpp
+++ b/src/msw/webrequest_winhttp.cpp
@@ -12,7 +12,7 @@
 
 #include "wx/webrequest.h"
 
-#if wxUSE_WEBREQUEST_WINHTTP
+#if wxUSE_WEBREQUEST && wxUSE_WEBREQUEST_WINHTTP
 
 #include "wx/mstream.h"
 #include "wx/msw/private.h"
diff --git a/src/osx/webrequest_urlsession.mm b/src/osx/webrequest_urlsession.mm
index f522d41391..cd101335c2 100644
--- a/src/osx/webrequest_urlsession.mm
+++ b/src/osx/webrequest_urlsession.mm
@@ -12,7 +12,7 @@
 
 #include "wx/webrequest.h"
 
-#if wxUSE_WEBREQUEST_URLSESSION
+#if wxUSE_WEBREQUEST && wxUSE_WEBREQUEST_URLSESSION
 
 #import <Foundation/Foundation.h>