diff --git a/tools/Makefile b/tools/Makefile
index 1de80dfdd6d6..81b33e301a3c 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -11,6 +11,7 @@ SUBDIRS = \
 	bin2c \
 	ps2-irxgen \
 	ps2adpcm \
+	ps2sdkinfo \
 	romimg \
 #	  gensymtab