diff --git a/metrics/src/gas.py b/metrics/src/gas.py
index 72e918c..ab3c5b7 100644
--- a/metrics/src/gas.py
+++ b/metrics/src/gas.py
@@ -39,6 +39,9 @@ def calc_avg_gas_price():
     logger.info(f'Getting historic block gas prices...')
     for index in range(GAS_ESTIMATION_ITERATIONS):
         block_number = block_number - BLOCK_SAMPLING * index
+        if block_number < 0:
+            break
+        logger.info(f'Getting block {block_number}...')
         block = w3.eth.get_block(block_number)
         total_gas_used += block['baseFeePerGas']