diff --git a/core/lib/zksync_core/src/l1_gas_price/gas_adjuster/mod.rs b/core/lib/zksync_core/src/l1_gas_price/gas_adjuster/mod.rs
index db3a8e059cf..94d511061d0 100644
--- a/core/lib/zksync_core/src/l1_gas_price/gas_adjuster/mod.rs
+++ b/core/lib/zksync_core/src/l1_gas_price/gas_adjuster/mod.rs
@@ -97,9 +97,12 @@ impl GasAdjuster {
             )
             .await?;
 
-            METRICS
-                .current_base_fee_per_gas
-                .set(*base_fee_history.last().unwrap());
+            // We shouldn't rely on L1 provider to return consistent results, so we check that we have at least one new sample.
+            if let Some(current_base_fee_per_gas) = base_fee_history.last() {
+                METRICS
+                    .current_base_fee_per_gas
+                    .set(*current_base_fee_per_gas);
+            }
             self.base_fee_statistics.add_samples(&base_fee_history);
 
             if let Some(current_blob_base_fee) = blob_base_fee_history.last() {