diff --git a/stdpopsim/catalog/HomSap/demographic_models.py b/stdpopsim/catalog/HomSap/demographic_models.py
index bc7c23d68..70574b82f 100644
--- a/stdpopsim/catalog/HomSap/demographic_models.py
+++ b/stdpopsim/catalog/HomSap/demographic_models.py
@@ -1577,9 +1577,9 @@ def _ooa_4pop():
     long_description = """
         Demographic model for a four population out-of-Africa history,
         taken from Jouganous et al. (2017). Parameter values were taken
-        from table 4 in the main text. This model was fit based on joint
-        allele frequecy spectrum (AFS) data from 1000 Genomes exomes
-        from the YRI, CEU, CHB, and JPT poulation samples. The demography
+        from table 4 in the main text. The model was fit using the joint
+        allele frequency spectrum (AFS) from 1000 Genomes exome
+        data for the YRI, CEU, CHB, and JPT samples. The demography
         follows the previous three-populations out-of-Africa models
         with an additional population split in Asia leading to the
         Japanese (JPT) population. Parameter values were estimated with