diff --git a/NEWS.md b/NEWS.md
index cde3c2ea..a550f6b2 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,6 +4,7 @@
 * addition of plot method for `sim_post` objects
 * `sim_filter()` can now use arbitrary variables, including user-appended environmental variables, for filtering tracks simulated with `sim_fit()`
 * `sim_fit()` now simulates tracks from user-specified `start` and `end` locations that differ from the estimated track start and end.
+* `fit_ssm()` now handles "generic location" data provided the locations have `x` and `y` standard errors. These data can be light-level geolocations, acoustic telemetry positions, or other location data. Input data should have `lc = "GL"` for all generic locations.
 * a change to the `min.dt` argument in `fit_ssm()`, the default is now `min.dt = 0` (no minimum time interval between observations, but any subsequent observations that occur at the same time are ignored when fitting an SSM).
 * fixed an issue with high temporal resolution data, where prediction times exactly match observation times when observations occur 1 s apart. This caused an error when fitting SSM's.
 
diff --git a/R/fit_ssm.R b/R/fit_ssm.R
index a4e8c609..36ea799b 100644
--- a/R/fit_ssm.R
+++ b/R/fit_ssm.R
@@ -134,7 +134,7 @@ fit_ssm <- function(x,
                     ang = c(15,25),
                     distlim = c(2500,5000),
                     spdf = TRUE,
-                    min.dt = NA,
+                    min.dt = 0,
                     pf = FALSE,
                     model = "crw",
                     time.step = NA,
diff --git a/man/fit_ssm.Rd b/man/fit_ssm.Rd
index 1b3839f5..eb9e7e70 100644
--- a/man/fit_ssm.Rd
+++ b/man/fit_ssm.Rd
@@ -11,7 +11,7 @@ fit_ssm(
   ang = c(15, 25),
   distlim = c(2500, 5000),
   spdf = TRUE,
-  min.dt = NA,
+  min.dt = 0,
   pf = FALSE,
   model = "crw",
   time.step = NA,