--- ./ricoh/Makefile.in.orig	Wed Nov 10 19:09:31 1999
+++ ./ricoh/Makefile.in	Wed Nov 10 19:09:46 1999
@@ -103,7 +103,7 @@
 LTLIBRARIES =  $(drivers_LTLIBRARIES)
 
 
-DEFS = @DEFS@ -I. -I$(srcdir) -I..
+DEFS = @DEFS@ -I. -I$(srcdir) -I.. -I${prefix}/include
 CPPFLAGS = @CPPFLAGS@
 LDFLAGS = @LDFLAGS@
 LIBS = @LIBS@
