diff --git a/parsl/executors/high_throughput/executor.py b/parsl/executors/high_throughput/executor.py
index 06ced1d1f4..7f8ea42d7e 100644
--- a/parsl/executors/high_throughput/executor.py
+++ b/parsl/executors/high_throughput/executor.py
@@ -346,9 +346,9 @@ def validate_resource_spec(self, resource_specification: dict):
         if resource_specification:
             raise InvalidResourceSpecification(
                 set(resource_specification.keys()),
-                ("HTEX does not support the supplied resource_specifications."
+                ("HTEX does not support the supplied resource_specifications. "
                  "For MPI applications consider using the MPIExecutor. "
-                 "For specifications for core count/memory/walltime, consider using WorkQueueExecutor. ")
+                 "For specifications for core count/memory/walltime, consider using WorkQueueExecutor.")
             )
         return