diff --git a/src/ffi/qrencode.fnl b/src/ffi/qrencode.fnl
index cbe97f0..0919aa1 100644
--- a/src/ffi/qrencode.fnl
+++ b/src/ffi/qrencode.fnl
@@ -48,7 +48,10 @@ typedef enum {
 } QRecLevel;
 
 /* Encode 8-bit string as QR code object */
-QRcode* QRcode_encodeString8bit( const char *string, int version, QRecLevel level );
+QRcode* QRcode_encodeString8bit( const char* string, int version, QRecLevel level );
+
+/* Free QR code object from memory */
+void QRcode_free( QRcode* qrcode );
 
 ")
 
@@ -78,6 +81,7 @@ Returns a 2D sequential table of true/false values representing black/white QR m
                  module_black? (= (% module_data 2) 1)]
              (table.insert row_table module_black?)))
          (table.insert qrcode_table row_table)))
+     (ffi_qrencode.QRcode_free qrcode)
      qrcode_table))
 
  }