diff --git a/10-syntax-scoring/code.scm b/10-syntax-scoring/code.scm
index c30002a..007bb33 100644
--- a/10-syntax-scoring/code.scm
+++ b/10-syntax-scoring/code.scm
@@ -1,9 +1,4 @@
-; get list of lines from a file
-(define (get-lines file)
-  (let loop [(lines '())]
-    (if (eof-object? (peek-char file))
-      lines
-      (loop (cons (get-line file) lines)))))
+(load "../common.scm")
 
 ; check if character can close chunk
 (define (closing? c)
diff --git a/common.scm b/common.scm
index 9f7c4d6..8b6e854 100644
--- a/common.scm
+++ b/common.scm
@@ -1,5 +1,12 @@
 (import (srfi :43)) ; vector extensions
 
+; get list of lines from a file
+(define (get-lines file)
+  (let loop [(lines '())]
+    (if (eof-object? (peek-char file))
+      lines
+      (loop (cons (get-line file) lines)))))
+
 ; returns a list of numbers parsed from the first line of the file,
 ; separated by commas
 (define (read-comma-separated-numbers file)