diff --git a/lib/source-map-consumer.js b/lib/source-map-consumer.js
index 17ef92b1..898badd6 100644
--- a/lib/source-map-consumer.js
+++ b/lib/source-map-consumer.js
@@ -458,6 +458,10 @@ class BasicSourceMapConsumer extends SourceMapConsumer {
       generatedColumn: util.getArg(aArgs, "column"),
     };
 
+    if (needle.generatedLine == null || needle.generatedColumn == null) {
+      throw new Error("line and column must be provided");
+    }
+
     if (needle.generatedLine < 1) {
       throw new Error("Line numbers must be >= 1");
     }