diff --git a/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/image/JPEGFactory.java b/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/image/JPEGFactory.java
index d4b5da6a3c4..3f64aa425d1 100644
--- a/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/image/JPEGFactory.java
+++ b/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/image/JPEGFactory.java
@@ -218,12 +218,12 @@ private static int getNumComponentsFromImageMetadata(ImageReader reader) throws
         try
         {
             XPath xpath = XPathFactory.newInstance().newXPath();
-            String numScanComponents = xpath.evaluate("markerSequence/sos/@numScanComponents", root);
-            if (numScanComponents.isEmpty())
+            String numFrameComponents = xpath.evaluate("markerSequence/sof/@numFrameComponents", root);
+            if (numFrameComponents.isEmpty())
             {
                 return 0;
             }
-            return Integer.parseInt(numScanComponents);
+            return Integer.parseInt(numFrameComponents);
         }
         catch (NumberFormatException | XPathExpressionException ex)
         {