diff --git a/probtrackxOptions.h b/probtrackxOptions.h
index 3d0a3f3f91f1019e2c6c8f38402f811ae8df7c30..133626ca17c13a010864c2b4a85ab6a1a2a12b1f 100644
--- a/probtrackxOptions.h
+++ b/probtrackxOptions.h
@@ -64,7 +64,7 @@ class probtrackxOptions {
   Option<float> distthresh;
   FmribOption<float> distthresh3;
   Option<float> c_thr;
-  FmribOption<float> fibthresh;
+  Option<float> fibthresh;
   Option<bool> sampvox;
   Option<float> steplength;
   Option<bool> loopcheck;