diff --git a/device/expmag.cxx b/device/expmag.cxx
index eb55c26..dd8bd95 100644
--- a/device/expmag.cxx
+++ b/device/expmag.cxx
@@ -108,7 +108,7 @@ typedef struct {
    int  epics_channels;         /* number of EPICS channels in /Devices/EXPMAG/EPICS/DD*/
    char device[EMNDEVS][16];    /* device names WEDAMP WEUDAC WED .... */
    char type[EMNDEVS][16];      /* device type MAG|PSIBL|GOSSEN|IPS120|EPICSGFA */
-   char server[EMNDEVS][255];    /* "information server" :
+   char server[EMNDEVS][32];    /* "information server" :
                                  *  CHAN|MAG|EPICS|<langpibserver>|<tcp/ip server name>
                                  *  CHAN : use communication handle of CHAN 
                                  *         <Channel number>