diff --git a/scriptbin/dyalogscript b/scriptbin/dyalogscript
index c99912738ec2..adeda1fe964e 100755
--- a/scriptbin/dyalogscript
+++ b/scriptbin/dyalogscript
@@ -2,7 +2,7 @@
 #set -x
 ## DO NOT CHANGE THIS FILE
 
-INSTALLDIR="/opt/mdyalog/19.0/64/unicode"
+INSTALLDIR="@installdir@"
 EXE="dyalog"
 
 ARGS=""
@@ -46,7 +46,7 @@ fi
 #	OPTS="$OPTS RIDE_INIT=$RIDE_INIT"
 #fi
 
-: ${SCRIPTDIR:=$INSTALLDIR}
+SCRIPTDIR="@scriptdir@"
 export LD_LIBRARY_PATH=${SCRIPTDIR}:${LD_LIBRARY_PATH}					
 
 eval "${SCRIPTDIR}/${EXE}" APLKEYS=\"$INSTALLDIR/aplkeys\" APLTRANS=\"$INSTALLDIR/apltrans\" ${APLT} ${APLK} $OPTS -script \"$SCRIPT\" "$ARGS"