diff --git a/certifier/tests/test_certify.rs b/certifier/tests/test_certify.rs
index 3cce309c..53023479 100644
--- a/certifier/tests/test_certify.rs
+++ b/certifier/tests/test_certify.rs
@@ -69,7 +69,7 @@ async fn test_certificate_post_proof() {
 
     // Try to certify with an invalid proof
     let mut invalid_req = req;
-    invalid_req.metadata.labels_per_unit = 2;
+    invalid_req.metadata.num_units = 8;
     let response = client
         .post(format!("http://{addr}/certify"))
         .json(&invalid_req)
diff --git a/src/metadata.rs b/src/metadata.rs
index fb84521d..892bc6f8 100644
--- a/src/metadata.rs
+++ b/src/metadata.rs
@@ -71,7 +71,6 @@ pub struct ProofMetadata {
     #[serde_as(as = "Base64")]
     pub challenge: [u8; 32],
     pub num_units: u32,
-    pub labels_per_unit: u64,
 }
 
 impl ProofMetadata {
@@ -81,7 +80,6 @@ impl ProofMetadata {
             node_id: post_metadata.node_id,
             commitment_atx_id: post_metadata.commitment_atx_id,
             num_units: post_metadata.num_units,
-            labels_per_unit: post_metadata.labels_per_unit,
         }
     }
 }
diff --git a/src/verification.rs b/src/verification.rs
index 9d317c20..7d46dda2 100644
--- a/src/verification.rs
+++ b/src/verification.rs
@@ -93,8 +93,6 @@ pub enum MetadataValidationError {
     NumUnitsTooSmall { min: u32, got: u32 },
     #[error("numunits too large: {got} < {max}")]
     NumUnitsTooLarge { max: u32, got: u32 },
-    #[error("invalid labels_per_unit: {got} != {expected}")]
-    LabelsPerUnitInvalid { expected: u64, got: u64 },
 }
 
 pub fn verify_metadata(
@@ -113,12 +111,6 @@ pub fn verify_metadata(
             got: metadata.num_units,
         });
     }
-    if metadata.labels_per_unit != init_cfg.labels_per_unit {
-        return Err(MetadataValidationError::LabelsPerUnitInvalid {
-            expected: init_cfg.labels_per_unit,
-            got: metadata.labels_per_unit,
-        });
-    }
     Ok(())
 }
 
@@ -301,7 +293,6 @@ mod tests {
             commitment_atx_id: [0; 32],
             challenge: [0; 32],
             num_units: 10,
-            labels_per_unit: 2048,
         };
         let mut pow_verifier = Box::new(MockPowVerifier::new());
         pow_verifier
@@ -341,7 +332,6 @@ mod tests {
             commitment_atx_id: [0u8; 32],
             challenge: [0u8; 32],
             num_units: 10,
-            labels_per_unit: 2048,
         };
         let mut pow_verifier = Box::new(MockPowVerifier::new());
         pow_verifier
@@ -397,7 +387,6 @@ mod tests {
             commitment_atx_id: [0; 32],
             challenge: [0; 32],
             num_units: 1,
-            labels_per_unit: 100,
         };
         let init_cfg = InitConfig {
             min_num_units: 1,
@@ -420,12 +409,5 @@ mod tests {
             };
             assert!(super::verify_metadata(&num_units_large, &init_cfg).is_err());
         }
-        {
-            let invalid_labels_per_unit = ProofMetadata {
-                labels_per_unit: 99,
-                ..valid_meta
-            };
-            assert!(super::verify_metadata(&invalid_labels_per_unit, &init_cfg).is_err());
-        }
     }
 }