diff --git a/deepcomp/env/util/utility.py b/deepcomp/env/util/utility.py
index 3931019..6f06dd9 100644
--- a/deepcomp/env/util/utility.py
+++ b/deepcomp/env/util/utility.py
@@ -16,7 +16,7 @@ def linear_clipped_utility(curr_dr, max_dr=MAX_UTILITY):
     """
     assert curr_dr >= 0 and max_dr >= 0
     assert MIN_UTILITY == 0 and MAX_UTILITY == max_dr, \
-        f"The chosen linear utility requires MIN_UTILITY=0 and sensible MAX_UTILITY. Set sensible values manually!"
+        "The chosen linear utility requires MIN_UTILITY=0 and sensible MAX_UTILITY. Set sensible values manually!"
     return np.clip(curr_dr, MIN_UTILITY, MAX_UTILITY)
 
 
diff --git a/deepcomp/util/env_setup.py b/deepcomp/util/env_setup.py
index d261e61..4799264 100644
--- a/deepcomp/util/env_setup.py
+++ b/deepcomp/util/env_setup.py
@@ -180,7 +180,7 @@ def get_env(map_size, bs_dist, num_static_ues, num_slow_ues, num_fast_ues, shari
     """Create and return the environment corresponding to the given map_size"""
     assert map_size in SUPPORTED_ENVS, f"Environment {map_size} is not one of {SUPPORTED_ENVS}."
     assert util_func in SUPPORTED_UTILITIES, \
-            f"Utility function {util_func} not supported. Supported: {SUPPORTED_UTILITIES}"
+        f"Utility function {util_func} not supported. Supported: {SUPPORTED_UTILITIES}"
 
     # create map and BS list
     map, bs_list = None, None