diff --git a/cde/lib/DtPrint/Makefile.am b/cde/lib/DtPrint/Makefile.am
index 640349657..d66a5fbb2 100644
--- a/cde/lib/DtPrint/Makefile.am
+++ b/cde/lib/DtPrint/Makefile.am
@@ -2,7 +2,7 @@ MAINTAINERCLEANFILES = Makefile.in
 
 lib_LTLIBRARIES = libDtPrint.la
 
-libDtPrint_la_CFLAGS = -DMULTIBYTE -DI18N_MSG
+libDtPrint_la_CFLAGS = -DMULTIBYTE -DI18N_MSG @DT_INCDIR@
 
 if SOLARIS
 libDtPrint_la_CFLAGS += -DNO_REGCOMP