diff --git a/tig-protocol/src/add_block.rs b/tig-protocol/src/add_block.rs
index 8d430dc8..edd855cd 100644
--- a/tig-protocol/src/add_block.rs
+++ b/tig-protocol/src/add_block.rs
@@ -667,7 +667,7 @@ async fn update_influence<T: Context>(ctx: &mut T, block: &Block) {
     let zero = PreciseNumber::from(0);
     let one = PreciseNumber::from(1);
     let imbalance_multiplier =
-        PreciseNumber::from_f64(config.multi_factor_proof_of_work.imbalance_multiplier);
+        PreciseNumber::from_f64(config.optimisable_proof_of_work.imbalance_multiplier);
     let num_challenges = PreciseNumber::from(active_challenge_ids.len());
 
     let mut weights = Vec::<PreciseNumber>::new();
diff --git a/tig-structs/src/config.rs b/tig-structs/src/config.rs
index 72b61d22..6f8d6951 100644
--- a/tig-structs/src/config.rs
+++ b/tig-structs/src/config.rs
@@ -12,7 +12,7 @@ serializable_struct_with_getters! {
         solution_signature: SolutionSignatureConfig,
         qualifiers: QualifiersConfig,
         difficulty: DifficultyConfig,
-        multi_factor_proof_of_work: MultiFactorProofOfWorkConfig,
+        optimisable_proof_of_work: OptimisableProofOfWorkConfig,
         rounds: RoundsConfig,
         algorithm_submissions: AlgorithmSubmissionsConfig,
         rewards: RewardsConfig,
@@ -79,7 +79,7 @@ serializable_struct_with_getters! {
     }
 }
 serializable_struct_with_getters! {
-    MultiFactorProofOfWorkConfig {
+    OptimisableProofOfWorkConfig {
         imbalance_multiplier: f64,
     }
 }