diff --git a/src/vim.h b/src/vim.h
index 90a5353..e7a5f58 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1929,8 +1929,8 @@
 #  ifdef FEAT_OLE
 #   define WM_OLE (WM_APP+0)
 #  endif
-#  ifdef FEAT_NETBEANS_INTG
-    /* message for Netbeans socket event */
+#  ifdef FEAT_CHANNEL
+    /* message for channel socket event */
 #   define WM_NETBEANS (WM_APP+1)
 #  endif
 # endif
@@ -1979,6 +1979,14 @@
 # define stat(a,b) (access(a,0) ? -1 : stat(a,b))
 #endif
 
+#ifdef FEAT_CHANNEL
+# ifdef WIN64
+typedef __int64 sock_T;
+# else
+typedef int sock_T;
+# endif
+#endif
+
 #include "ex_cmds.h"	    /* Ex command defines */
 #include "proto.h"	    /* function prototypes */
 
@@ -2312,4 +2320,10 @@
 # define SET_NO_HLSEARCH(flag) no_hlsearch = (flag)
 #endif
 
+#ifdef FEAT_CHANNEL
+# define MAX_OPEN_CHANNELS 10
+#else
+# define MAX_OPEN_CHANNELS 0
+#endif
+
 #endif /* VIM__H */