diff --git a/src/Makefile b/src/Makefile
index 2ec81c1..d96dd19 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -12,7 +12,7 @@ F77 = gfortran
 all:
 	make addwcs angular calibrate dec2s faketle fitsheader fitskey imgstat jpg2fits jpgstack measure pgm2fits plotfits pstrack rde2iod reduce residuals runsched satfit satid satmap satorbit s2dec skymap tle2ole tleinfo uk2iod stviewer wcsfit deproject slewto waitfor pass detect launchtle propagate fakeiod csv2tle normal posmatch posvel xyz2tle mvtle confirm allnight
 # XXX Not proper
-	mkdir ../bin
+	mkdir -p ../bin
 	mv addwcs angular calibrate dec2s faketle fitsheader fitskey imgstat jpg2fits jpgstack measure pgm2fits plotfits pstrack rde2iod reduce residuals runsched satfit satid satmap satorbit s2dec skymap tle2ole tleinfo uk2iod stviewer wcsfit deproject slewto waitfor pass detect launchtle propagate fakeiod csv2tle normal posmatch posvel xyz2tle mvtle confirm allnight ../bin/
 	cp tleupdate ../bin/