diff --git a/package-lock.json b/package-lock.json
index 69cae0f579399c24d8167c5a217ff938962855cc..8accbb5e8342dc83b43ce2b2d221725c385dfff8 100644
Binary files a/package-lock.json and b/package-lock.json differ
diff --git a/src/mol-io/reader/cif/text/parser.ts b/src/mol-io/reader/cif/text/parser.ts
index 311e01b3fc583701d4d4e3a8a49601b9b25c1bb5..8f6a466e7f7161692d898d1c5825449e42090df8 100644
--- a/src/mol-io/reader/cif/text/parser.ts
+++ b/src/mol-io/reader/cif/text/parser.ts
@@ -502,7 +502,7 @@ async function handleLoop(tokenizer: TokenizerState, ctx: FrameContext): Promise
         moveNext(tokenizer);
     }
 
-    const rowCountEstimate = name === 'atom_site' ? (tokenizer.data.length / 100) | 0 : 32;
+    const rowCountEstimate = name === '_atom_site' ? (tokenizer.data.length / 100) | 0 : 32;
     const tokens: Tokens[] = [];
     const fieldCount = fieldNames.length;
     for (let i = 0; i < fieldCount; i++) tokens[i] = TokenBuilder.create(tokenizer, rowCountEstimate);