diff --git a/src/main/java/org/htmlunit/css/CssPixelValueConverter.java b/src/main/java/org/htmlunit/css/CssPixelValueConverter.java
index 50e4f90fbc..74b90833fd 100644
--- a/src/main/java/org/htmlunit/css/CssPixelValueConverter.java
+++ b/src/main/java/org/htmlunit/css/CssPixelValueConverter.java
@@ -117,9 +117,6 @@ else if (value.endsWith("pc")) {
         else if (value.endsWith("ch")) {
             i = i * 8;
         }
-        else if (value.endsWith("ch")) {
-            i = i * 8;
-        }
         else if (value.endsWith("vh")
                 || value.endsWith("vmin")) {
             // this matches also
diff --git a/src/main/java/org/htmlunit/javascript/host/html/HTMLTableCellElement.java b/src/main/java/org/htmlunit/javascript/host/html/HTMLTableCellElement.java
index affde1757d..3bcd26f349 100644
--- a/src/main/java/org/htmlunit/javascript/host/html/HTMLTableCellElement.java
+++ b/src/main/java/org/htmlunit/javascript/host/html/HTMLTableCellElement.java
@@ -88,8 +88,8 @@ public int getOffsetWidth() {
         if ("collapse".equals(style.getStyleAttribute(StyleAttributes.Definition.BORDER_COLLAPSE, true))) {
             final HtmlTableRow row = getRow();
             if (row != null) {
-                w -= 0.5 * style.getBorderLeftValue();
-                w -= 0.5 * style.getBorderRightValue();
+                w -= 0.5f * style.getBorderLeftValue();
+                w -= 0.5f * style.getBorderRightValue();
             }
         }
 
diff --git a/src/main/java/org/htmlunit/platform/image/ImageIOImageData.java b/src/main/java/org/htmlunit/platform/image/ImageIOImageData.java
index dab0142a6b..cc0c6b2ad9 100644
--- a/src/main/java/org/htmlunit/platform/image/ImageIOImageData.java
+++ b/src/main/java/org/htmlunit/platform/image/ImageIOImageData.java
@@ -100,10 +100,8 @@ protected void finalize() throws Throwable {
     @SuppressWarnings("PMD.UnusedLocalVariable")
     public void close() throws IOException {
         if (imageReader_ != null) {
-            try {
-                try (ImageInputStream stream = (ImageInputStream) imageReader_.getInput()) {
-                    // nothing
-                }
+            try (ImageInputStream stream = (ImageInputStream) imageReader_.getInput()) {
+                // nothing
             }
             finally {
                 imageReader_.setInput(null);