diff --git a/src/common/bit_matrix.rs b/src/common/bit_matrix.rs
index b9956f2..91b9879 100644
--- a/src/common/bit_matrix.rs
+++ b/src/common/bit_matrix.rs
@@ -203,6 +203,12 @@ impl BitMatrix {
         return ((self.bits[offset] >> (x & 0x1f)) & 1) != 0;
     }
 
+    pub fn try_get(&self, x: u32, y: u32) -> Result<bool,Exceptions> {
+        let offset = y as usize * self.row_size + (x as usize / 32);
+        if offset > self.bits.len() { return Err(Exceptions::IndexOutOfBoundsException("".to_owned()))}
+        return Ok(((self.bits[offset] >> (x & 0x1f)) & 1) != 0);
+    }
+
     /**
      * <p>Sets the given bit to true.</p>
      *
diff --git a/src/pdf417/decoder/pdf_417_scanning_decoder.rs b/src/pdf417/decoder/pdf_417_scanning_decoder.rs
index 6103ef7..2974430 100644
--- a/src/pdf417/decoder/pdf_417_scanning_decoder.rs
+++ b/src/pdf417/decoder/pdf_417_scanning_decoder.rs
@@ -817,6 +817,7 @@ fn adjustCodewordStartColumn(
                 return codewordStartColumn;
             }
             correctedStartColumn = (correctedStartColumn as i32 + increment) as u32;
+            if let Err(_) = image.try_get(correctedStartColumn, imageRow){return 0}
         }
         increment = -increment;
         leftToRight = !leftToRight;
diff --git a/tests/qr_code_blackbox_tests.rs b/tests/qr_code_blackbox_tests.rs
index 5292857..8f97558 100644
--- a/tests/qr_code_blackbox_tests.rs
+++ b/tests/qr_code_blackbox_tests.rs
@@ -88,6 +88,7 @@ fn qrcode_black_box4_test_case() {
     let mut tester = common::AbstractBlackBoxTestCase::new(
         "test_resources/blackbox/qrcode-4",
         MultiFormatReader::default(),
+        // QRCodeReader::new(),
         BarcodeFormat::QR_CODE,
     );
     tester.add_test(36, 36, 0.0);