1 files changed, 2 insertions, 1 deletions
diff --git a/src/fit.c b/src/fit.c
index 3ab0ffe..dc4f88b 100644
--- a/src/fit.c
+++ b/src/fit.c
@@ -21,6 +21,7 @@
 #include "pmt_response.h"
 #include <signal.h> /* for signal() */
 #include "release.h"
+#include "id_particles.h"
 
 char *GitSHA1(void);
 char *GitDirty(void);
@@ -4995,7 +4996,7 @@ double nll(unsigned int n, const double *x, double *grad, void *params)
     z2[0] = x[8];
 
     gettimeofday(&tv_start, NULL);
-    fval = nll_muon(fpars->ev, T, pos, dir, t0, z1, z2, 1, fpars->epsrel, fpars->fast);
+    fval = nll_muon(fpars->ev, IDP_MU_MINUS, T, pos, dir, t0, z1, z2, 1, fpars->epsrel, fpars->fast);
     gettimeofday(&tv_stop, NULL);
 
     long long elapsed = (tv_stop.tv_sec - tv_start.tv_sec)*1000 + (tv_stop.tv_usec - tv_start.tv_usec)/1000;