diff --git a/vecreg.cc b/vecreg.cc
index 81e49f74f1366c98b202e7b94c5baed46a11e8b4..d47951e3357a8c0d9b07f2934c3d8621cca6ef5c 100755
--- a/vecreg.cc
+++ b/vecreg.cc
@@ -41,7 +41,7 @@ Option<string> warp(string("-w,--warpfield"),string(""),
 		       string("filename of 4D warp field for nonlinear registration"),
 		       false,requires_argument);
 Option<string> interpmethod(string("--interp"),"",
-		       string("interpolation method : nearestneighbour (default) or trilinear or sinc"),
+		       string("interpolation method : nearestneighbour, trilinear (default) or sinc"),
 		       false,requires_argument);
 Option<string> maskfile(string("-m,--mask"),string(""),
 		       string("brain mask in input space"),