constification

[exim.git] / src / src / lookupapi.h

diff --git a/src/src/lookupapi.h b/src/src/lookupapi.h
index 2a270714bce7989661a1774652fa149cc97cae07..9c646e6e654948c314ff29e166cbc50cb138c323 100644 (file)
--- a/src/src/lookupapi.h
+++ b/src/src/lookupapi.h
@@ -30,7 +30,7 @@ typedef struct lookup_info {
   int (*find)(                    /* find function */
     void *,                       /* handle */
     uschar *,                     /* file name or NULL */
-    uschar *,                     /* key or query */
+    const uschar *,               /* key or query */
     int,                          /* length of key or query */
     uschar **,                    /* for returning answer */
     uschar **,                    /* for error message */