diff --git a/imageio/imageio-pcx/src/main/java/com/twelvemonkeys/imageio/plugins/pcx/PCXImageReader.java b/imageio/imageio-pcx/src/main/java/com/twelvemonkeys/imageio/plugins/pcx/PCXImageReader.java
index 9fa62c23..c6e2e2d3 100755
--- a/imageio/imageio-pcx/src/main/java/com/twelvemonkeys/imageio/plugins/pcx/PCXImageReader.java
+++ b/imageio/imageio-pcx/src/main/java/com/twelvemonkeys/imageio/plugins/pcx/PCXImageReader.java
@@ -213,14 +213,12 @@ public final class PCXImageReader extends ImageReaderBase {
             byte[] rowDataByte = ((DataBufferByte) rowRaster.getDataBuffer()).getData();
 
             for (int y = 0; y < height; y++) {
-                switch (header.getBitsPerPixel()) {
-                    case 1:
-                        readRowByte(input, srcRegion, xSub, ySub, planeData, 0, planeWidth * header.getChannels(), destRaster, clippedRow, y);
-                        break;
-                    default:
-                        throw new AssertionError();
+                if (header.getBitsPerPixel() != 1) {
+                    throw new AssertionError();
                 }
 
+                readRowByte(input, srcRegion, xSub, ySub, planeData, 0, planeWidth * header.getChannels(), destRaster, clippedRow, y);
+
                 int pixelPos = 0;
                 for (int planePos = 0; planePos < planeWidth; planePos++) {
                     BitRotator.bitRotateCW(planeData, planePos, planeWidth, rowDataByte, pixelPos, 1);