diff --git a/samples/java/sbt/src/main/resources/img1.bmp b/samples/java/sbt/src/main/resources/img1.bmp
deleted file mode 100644
index f239370e74..0000000000
Binary files a/samples/java/sbt/src/main/resources/img1.bmp and /dev/null differ
diff --git a/samples/java/sbt/src/main/resources/img1.png b/samples/java/sbt/src/main/resources/img1.png
new file mode 100644
index 0000000000..93cd5945a7
Binary files /dev/null and b/samples/java/sbt/src/main/resources/img1.png differ
diff --git a/samples/java/sbt/src/main/resources/img2.bmp b/samples/java/sbt/src/main/resources/img2.bmp
deleted file mode 100644
index ac323fa8ac..0000000000
Binary files a/samples/java/sbt/src/main/resources/img2.bmp and /dev/null differ
diff --git a/samples/java/sbt/src/main/resources/img2.png b/samples/java/sbt/src/main/resources/img2.png
new file mode 100644
index 0000000000..41959c66f2
Binary files /dev/null and b/samples/java/sbt/src/main/resources/img2.png differ
diff --git a/samples/java/sbt/src/main/scala/ScalaCorrespondenceMatchingDemo.scala b/samples/java/sbt/src/main/scala/ScalaCorrespondenceMatchingDemo.scala
index da455e5c23..30ab0553e3 100644
--- a/samples/java/sbt/src/main/scala/ScalaCorrespondenceMatchingDemo.scala
+++ b/samples/java/sbt/src/main/scala/ScalaCorrespondenceMatchingDemo.scala
@@ -45,8 +45,8 @@ object ScalaCorrespondenceMatchingDemo {
     }
 
     // Load the images from the |resources| directory.
-    val leftImage = Highgui.imread(getClass.getResource("/img1.bmp").getPath)
-    val rightImage = Highgui.imread(getClass.getResource("/img2.bmp").getPath)
+    val leftImage = Highgui.imread(getClass.getResource("/img1.png").getPath)
+    val rightImage = Highgui.imread(getClass.getResource("/img2.png").getPath)
 
     // Detect KeyPoints and extract descriptors.
     val (leftKeyPoints, leftDescriptors) = detectAndExtract(leftImage)