diff --git a/spatialpy/core/domain.py b/spatialpy/core/domain.py
index d2d1ffeb..98ac30ce 100644
--- a/spatialpy/core/domain.py
+++ b/spatialpy/core/domain.py
@@ -144,7 +144,7 @@ def compile_prep(self):
         self.listOfTypeIDs = list(self.typeNdxMapping.values())
         self._get_type_name_mapping()
 
-    def add_point(self, point, vol=0, mass=0, type_id=1, nu=0, fixed=False, rho=None, c=0):
+    def add_point(self, point, vol=1, mass=1, type_id=1, nu=0, fixed=False, rho=None, c=10):
         """
         Add a single point particle to the domain space.