diff --git a/configs/mainnet/altair.yaml b/configs/mainnet/altair.yaml
index 475cea732..44490f982 100644
--- a/configs/mainnet/altair.yaml
+++ b/configs/mainnet/altair.yaml
@@ -1,7 +1,5 @@
 # Mainnet preset - Altair
 
-CONFIG_NAME: "mainnet"
-
 # Updated penalty values
 # ---------------------------------------------------------------
 # 3 * 2**24 (= 50,331,648)
diff --git a/configs/mainnet/custody_game.yaml b/configs/mainnet/custody_game.yaml
index 8039d839b..ecb2dc377 100644
--- a/configs/mainnet/custody_game.yaml
+++ b/configs/mainnet/custody_game.yaml
@@ -1,7 +1,5 @@
 # Mainnet preset - Custody Game
 
-CONFIG_NAME: "mainnet"
-
 # Time parameters
 # ---------------------------------------------------------------
 # 2**1 (= 2) epochs, 12.8 minutes
diff --git a/configs/mainnet/merge.yaml b/configs/mainnet/merge.yaml
index 582e7d642..b4667f5b5 100644
--- a/configs/mainnet/merge.yaml
+++ b/configs/mainnet/merge.yaml
@@ -1,7 +1,5 @@
 # Mainnet preset - The Merge
 
-CONFIG_NAME: "mainnet"
-
 # Fork
 # ---------------------------------------------------------------
 MERGE_FORK_VERSION: 0x02000000
diff --git a/configs/mainnet/phase0.yaml b/configs/mainnet/phase0.yaml
index ace44dd23..8b902f1c3 100644
--- a/configs/mainnet/phase0.yaml
+++ b/configs/mainnet/phase0.yaml
@@ -1,7 +1,5 @@
 # Mainnet preset
 
-CONFIG_NAME: "mainnet"
-
 # Misc
 # ---------------------------------------------------------------
 # 2**6 (= 64)
diff --git a/configs/mainnet/sharding.yaml b/configs/mainnet/sharding.yaml
index 0e59a674b..4773aa5f5 100644
--- a/configs/mainnet/sharding.yaml
+++ b/configs/mainnet/sharding.yaml
@@ -1,7 +1,5 @@
 # Mainnet preset - Sharding
 
-CONFIG_NAME: "mainnet"
-
 # Fork
 # ---------------------------------------------------------------
 SHARDING_FORK_VERSION: 0x03000000
diff --git a/configs/minimal/altair.yaml b/configs/minimal/altair.yaml
index 096941721..10bdf318b 100644
--- a/configs/minimal/altair.yaml
+++ b/configs/minimal/altair.yaml
@@ -1,7 +1,5 @@
 # Minimal preset - Altair
 
-CONFIG_NAME: "minimal"
-
 # Updated penalty values
 # ---------------------------------------------------------------
 # 3 * 2**24 (= 50,331,648)
diff --git a/configs/minimal/custody_game.yaml b/configs/minimal/custody_game.yaml
index 1d9393e80..8b8992fb6 100644
--- a/configs/minimal/custody_game.yaml
+++ b/configs/minimal/custody_game.yaml
@@ -1,7 +1,5 @@
 # Minimal preset - Custody Game
 
-CONFIG_NAME: "minimal"
-
 # Time parameters
 # ---------------------------------------------------------------
 # 2**1 (= 2) epochs, 12.8 minutes
diff --git a/configs/minimal/merge.yaml b/configs/minimal/merge.yaml
index e2857917f..394595d02 100644
--- a/configs/minimal/merge.yaml
+++ b/configs/minimal/merge.yaml
@@ -1,7 +1,5 @@
 # Minimal preset - The Merge
 
-CONFIG_NAME: "minimal"
-
 # Fork
 # ---------------------------------------------------------------
 MERGE_FORK_VERSION: 0x02000001
diff --git a/configs/minimal/phase0.yaml b/configs/minimal/phase0.yaml
index 93337adf8..3624a2702 100644
--- a/configs/minimal/phase0.yaml
+++ b/configs/minimal/phase0.yaml
@@ -1,7 +1,5 @@
 # Minimal preset
 
-CONFIG_NAME: "minimal"
-
 # Misc
 # ---------------------------------------------------------------
 
diff --git a/configs/minimal/sharding.yaml b/configs/minimal/sharding.yaml
index ca1cc1d6b..f32e2827d 100644
--- a/configs/minimal/sharding.yaml
+++ b/configs/minimal/sharding.yaml
@@ -1,7 +1,5 @@
 # Minimal preset - Sharding
 
-CONFIG_NAME: "minimal"
-
 # Fork
 # ---------------------------------------------------------------
 SHARDING_FORK_VERSION: 0x03000001
diff --git a/tests/core/pyspec/eth2spec/config/config_util.py b/tests/core/pyspec/eth2spec/config/config_util.py
index ee2007600..917cf3a60 100644
--- a/tests/core/pyspec/eth2spec/config/config_util.py
+++ b/tests/core/pyspec/eth2spec/config/config_util.py
@@ -54,8 +54,7 @@ def load_config_file(configs_dir: str, presets_name: str) -> Dict[str, Any]:
             out[k] = [int(item) if item.isdigit() else item for item in v]
         elif isinstance(v, str) and v.startswith("0x"):
             out[k] = bytes.fromhex(v[2:])
-        elif k == "CONFIG_NAME":
-            out[k] = str(v)
         else:
             out[k] = int(v)
+    out['CONFIG_NAME'] = presets_name
     return out