diff --git a/jtag/src/Makefile.am b/jtag/src/Makefile.am
index 2e875499..cff3e020 100644
--- a/jtag/src/Makefile.am
+++ b/jtag/src/Makefile.am
@@ -33,4 +33,4 @@ jtag_DEPENDENCIES = tap/libtap.a part/libpart.a
 
 jtag_LDADD = -lreadline -lncurses -Ltap -ltap -Lpart -lpart
 
-INCLUDES = -I$(top_srcdir)/include $(OPENWINCE_INC)
+INCLUDES = -I$(top_srcdir)/include $(OPENWINCE_INC) -DJTAG_DATA_DIR=\"$(pkgdatadir)\"
diff --git a/jtag/src/jtag.c b/jtag/src/jtag.c
index 0ae9dc8c..31afa784 100644
--- a/jtag/src/jtag.c
+++ b/jtag/src/jtag.c
@@ -99,7 +99,7 @@ main( void )
 			t = get_token( NULL );
 			if (ps)
 				parts_free( ps );
-			ps = detect_parts( "../data" );
+			ps = detect_parts( JTAG_DATA_DIR );
 			if (!ps->len)
 				continue;
 			parts_set_instruction( ps, "SAMPLE/PRELOAD" );