diff --git a/include/wx/msw/missing.h b/include/wx/msw/missing.h
index 6e75c541c8..1cb4036a88 100644
--- a/include/wx/msw/missing.h
+++ b/include/wx/msw/missing.h
@@ -285,115 +285,115 @@
 #endif
 
 #ifndef INET_E_ERROR_FIRST
-#define INET_E_ERROR_FIRST 0x800C0002L
+#define INET_E_ERROR_FIRST ((long)0x800C0002L)
 #endif
 
 #ifndef INET_E_INVALID_URL
-#define INET_E_INVALID_URL 0x800C0002L
+#define INET_E_INVALID_URL ((long)0x800C0002L)
 #endif
 
 #ifndef INET_E_NO_SESSION
-#define INET_E_NO_SESSION 0x800C0003L
+#define INET_E_NO_SESSION ((long)0x800C0003L)
 #endif
 
 #ifndef INET_E_CANNOT_CONNECT
-#define INET_E_CANNOT_CONNECT 0x800C0004L
+#define INET_E_CANNOT_CONNECT ((long)0x800C0004L)
 #endif
 
 #ifndef INET_E_RESOURCE_NOT_FOUND
-#define INET_E_RESOURCE_NOT_FOUND 0x800C0005L
+#define INET_E_RESOURCE_NOT_FOUND ((long)0x800C0005L)
 #endif
 
 #ifndef INET_E_OBJECT_NOT_FOUND
-#define INET_E_OBJECT_NOT_FOUND 0x800C0006L
+#define INET_E_OBJECT_NOT_FOUND ((long)0x800C0006L)
 #endif
 
 #ifndef INET_E_DATA_NOT_AVAILABLE
-#define INET_E_DATA_NOT_AVAILABLE 0x800C0007L
+#define INET_E_DATA_NOT_AVAILABLE ((long)0x800C0007L)
 #endif
 
 #ifndef INET_E_DOWNLOAD_FAILURE
-#define INET_E_DOWNLOAD_FAILURE 0x800C0008L
+#define INET_E_DOWNLOAD_FAILURE ((long)0x800C0008L)
 #endif
 
 #ifndef INET_E_AUTHENTICATION_REQUIRED
-#define INET_E_AUTHENTICATION_REQUIRED 0x800C0009L
+#define INET_E_AUTHENTICATION_REQUIRED ((long)0x800C0009L)
 #endif
 
 #ifndef INET_E_NO_VALID_MEDIA
-#define INET_E_NO_VALID_MEDIA 0x800C000AL
+#define INET_E_NO_VALID_MEDIA ((long)0x800C000AL)
 #endif
 
 #ifndef INET_E_CONNECTION_TIMEOUT
-#define INET_E_CONNECTION_TIMEOUT 0x800C000BL
+#define INET_E_CONNECTION_TIMEOUT ((long)0x800C000BL)
 #endif
 
 #ifndef INET_E_INVALID_REQUEST
-#define INET_E_INVALID_REQUEST 0x800C000CL
+#define INET_E_INVALID_REQUEST ((long)0x800C000CL)
 #endif
 
 #ifndef INET_E_UNKNOWN_PROTOCOL
-#define INET_E_UNKNOWN_PROTOCOL 0x800C000DL
+#define INET_E_UNKNOWN_PROTOCOL ((long)0x800C000DL)
 #endif
 
 #ifndef INET_E_SECURITY_PROBLEM
-#define INET_E_SECURITY_PROBLEM 0x800C000EL
+#define INET_E_SECURITY_PROBLEM ((long)0x800C000EL)
 #endif
 
 #ifndef INET_E_CANNOT_LOAD_DATA
-#define INET_E_CANNOT_LOAD_DATA 0x800C000FL
+#define INET_E_CANNOT_LOAD_DATA ((long)0x800C000FL)
 #endif
 
 #ifndef INET_E_CANNOT_INSTANTIATE_OBJECT
-#define INET_E_CANNOT_INSTANTIATE_OBJECT 0x800C0010L
+#define INET_E_CANNOT_INSTANTIATE_OBJECT ((long)0x800C0010L)
 #endif
 
 #ifndef INET_E_QUERYOPTION_UNKNOWN
-#define INET_E_QUERYOPTION_UNKNOWN 0x800C0013L
+#define INET_E_QUERYOPTION_UNKNOWN ((long)0x800C0013L)
 #endif
 
 #ifndef INET_E_REDIRECT_FAILED
-#define INET_E_REDIRECT_FAILED 0x800C0014L
+#define INET_E_REDIRECT_FAILED ((long)0x800C0014L)
 #endif
 
 #ifndef INET_E_REDIRECT_TO_DIR
-#define INET_E_REDIRECT_TO_DIR 0x800C0015L
+#define INET_E_REDIRECT_TO_DIR ((long)0x800C0015L)
 #endif
 
 #ifndef INET_E_CANNOT_LOCK_REQUEST
-#define INET_E_CANNOT_LOCK_REQUEST 0x800C0016L
+#define INET_E_CANNOT_LOCK_REQUEST ((long)0x800C0016L)
 #endif
 
 #ifndef INET_E_USE_EXTEND_BINDING
-#define INET_E_USE_EXTEND_BINDING 0x800C0017L
+#define INET_E_USE_EXTEND_BINDING ((long)0x800C0017L)
 #endif
 
 #ifndef INET_E_TERMINATED_BIND
-#define INET_E_TERMINATED_BIND 0x800C0018L
+#define INET_E_TERMINATED_BIND ((long)0x800C0018L)
 #endif
 
 #ifndef INET_E_INVALID_CERTIFICATE
-#define INET_E_INVALID_CERTIFICATE 0x800C0019L
+#define INET_E_INVALID_CERTIFICATE ((long)0x800C0019L)
 #endif
 
 #ifndef INET_E_CODE_DOWNLOAD_DECLINED
-#define INET_E_CODE_DOWNLOAD_DECLINED 0x800C0100L
+#define INET_E_CODE_DOWNLOAD_DECLINED ((long)0x800C0100L)
 #endif
 
 #ifndef INET_E_RESULT_DISPATCHED
-#define INET_E_RESULT_DISPATCHED 0x800C0200L
+#define INET_E_RESULT_DISPATCHED ((long)0x800C0200L)
 #endif
 
 #ifndef INET_E_CANNOT_REPLACE_SFP_FILE
-#define INET_E_CANNOT_REPLACE_SFP_FILE 0x800C0300L
+#define INET_E_CANNOT_REPLACE_SFP_FILE ((long)0x800C0300L)
 #endif
 
 #ifndef INET_E_CODE_INSTALL_BLOCKED_BY_HASH_POLICY
-#define INET_E_CODE_INSTALL_BLOCKED_BY_HASH_POLICY 0x800C0500L
+#define INET_E_CODE_INSTALL_BLOCKED_BY_HASH_POLICY ((long)0x800C0500L)
 #endif
 
 #ifndef INET_E_CODE_INSTALL_SUPPRESSED
-#define INET_E_CODE_INSTALL_SUPPRESSED 0x800C0400L
+#define INET_E_CODE_INSTALL_SUPPRESSED ((long)0x800C0400L)
 #endif
 
 #ifndef MUI_LANGUAGE_NAME