diff --git a/lalpulsar/test/BinarySSBTimesTest.c b/lalpulsar/test/BinarySSBTimesTest.c
index 63e51ec84b874ab62c73f945c5b2f579be7bac71..9ac5406d6599fa9f0f07b3d742578dc969ea071f 100644
--- a/lalpulsar/test/BinarySSBTimesTest.c
+++ b/lalpulsar/test/BinarySSBTimesTest.c
@@ -186,7 +186,7 @@ main ( int argc, char *argv[] )
 
   // ----- step 3: compare results
   REAL8 err_DeltaT, err_Tdot;
-  REAL8 tolerance = 1e-10;
+  REAL8 tolerance = 1e-9;
   int ret = XLALCompareMultiSSBtimes ( &err_DeltaT, &err_Tdot, multiBinary_ref, multiBinary_test );
   XLAL_CHECK ( ret == XLAL_SUCCESS, XLAL_EFUNC, "XLALCompareMultiSSBtimes() failed.\n");