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-rw-r--r--libcrystfel/src/reax.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libcrystfel/src/reax.c b/libcrystfel/src/reax.c
index 90d4e59d..a8a1152e 100644
--- a/libcrystfel/src/reax.c
+++ b/libcrystfel/src/reax.c
@@ -291,7 +291,7 @@ static double iterate_refine_vector(double *x, double *y, double *z,
kno = f->rx*(*x) + f->ry*(*y) + f->rz*(*z); /* Sorry ... */
kn = nearbyint(kno);
- if ( kn - kno > 0.3 ) continue;
+ if ( fabs(kn - kno) > 0.3 ) continue;
xv[0] = f->rx; xv[1] = f->ry; xv[2] = f->rz;