diff --git a/packages/metro-source-map/src/Consumer/MappingsConsumer.js b/packages/metro-source-map/src/Consumer/MappingsConsumer.js
index bae03c4234..54777ef14a 100644
--- a/packages/metro-source-map/src/Consumer/MappingsConsumer.js
+++ b/packages/metro-source-map/src/Consumer/MappingsConsumer.js
@@ -140,7 +140,6 @@ export default class MappingsConsumer
         originalColumnDelta,
         nameIndexDelta,
       ] = decodedVlqValues;
-      decodeVlq(mappingRaw);
       invariant(generatedColumnDelta != null, 'Invalid generated column delta');
       generatedColumn = add(generatedColumn, generatedColumnDelta);
       const mapping: {...Mapping, ...} = {