--- configure
+++ configure
@@ -6114,7 +6114,7 @@
   packageprefix=${prefix}
 fi
 
-CFLAGS="$CFLAGS -DPREFIX=\\\"$packageprefix\\\" -DDATA_PREFIX=\\\"$packageprefix/share\\\""
+CFLAGS="$CFLAGS -DPREFIX=\\\"$packageprefix\\\" -DDATA_PREFIX=\\\"$datadir\\\""
 
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'