diff --git a/src/ansys/mapdl/core/mapdl_extended.py b/src/ansys/mapdl/core/mapdl_extended.py
index 94f2808fd4..a12ba23392 100644
--- a/src/ansys/mapdl/core/mapdl_extended.py
+++ b/src/ansys/mapdl/core/mapdl_extended.py
@@ -2314,7 +2314,7 @@ def load_array(self, name, array):
         np.savetxt(
             filename,
             array,
-            delimiter=",",
+            delimiter="",
             header="File generated by PyMAPDL:load_array",
             fmt="%24.18e",
         )
@@ -2329,7 +2329,7 @@ def load_array(self, name, array):
             n2 = imax
             n3 = kmax
             self.vread(name, filename, n1=n1, n2=n2, n3=n3, label=label, nskip=1)
-            fmt = "(" + ",',',".join(["E24.18" for i in range(jmax)]) + ")"
+            fmt = f"({jmax}E24.18)"
             logger.info("Using *VREAD with format %s in %s", fmt, filename)
             self.run(fmt)