diff --git a/pykat/commands.py b/pykat/commands.py
index e8ffe340dc2b4ba815973102105a7e14242c91b8..bf546c04f3841e2a0d3b581e20440997f413e260 100644
--- a/pykat/commands.py
+++ b/pykat/commands.py
@@ -210,7 +210,7 @@ class xaxis(Command):
         comp_name = self.__comp.name if hasattr(self.__comp, "name") else self.__comp
         param_name = self.__param.name if isinstance(self.__param, Param) else self.__param
         
-        return '{axis_type} {0} {1} {2} {3} {4} {5}'.format(
+        return '{axis_type} {0} {1} {2} {3:.16g} {4:.16g} {5}'.format(
                 comp_name, param_name, self.scale,
                 min(self.limits), max(self.limits), self.steps, axis_type=self._axis_type);