diff --git a/includes/theme.inc b/includes/theme.inc
index 5325ff737bf2..9bd706209a9a 100644
--- a/includes/theme.inc
+++ b/includes/theme.inc
@@ -1760,10 +1760,10 @@ function theme_table($variables) {
  */
 function theme_tablesort_indicator($variables) {
   if ($variables['style'] == "asc") {
-    return theme('image', array('path' => 'misc/arrow-asc.png', 'alt' => t('sort ascending'), 'title' => t('sort ascending')));
+    return theme('image', array('path' => 'misc/arrow-asc.png', 'width' => 13, 'height' => 13, 'alt' => t('sort ascending'), 'title' => t('sort ascending')));
   }
   else {
-    return theme('image', array('path' => 'misc/arrow-desc.png', 'alt' => t('sort descending'), 'title' => t('sort descending')));
+    return theme('image', array('path' => 'misc/arrow-desc.png', 'width' => 13, 'height' => 13, 'alt' => t('sort descending'), 'title' => t('sort descending')));
   }
 }
 
@@ -1876,7 +1876,7 @@ function theme_more_help_link($variables) {
  */
 function theme_feed_icon($variables) {
   $text = t('Subscribe to @feed-title', array('@feed-title' => $variables['title']));
-  if ($image = theme('image', array('path' => 'misc/feed.png', 'alt' => $text))) {
+  if ($image = theme('image', array('path' => 'misc/feed.png', 'width' => 16, 'height' => 16, 'alt' => $text))) {
     return l($image, $variables['url'], array('html' => TRUE, 'attributes' => array('class' => array('feed-icon'), 'title' => $text)));
   }
 }
diff --git a/misc/watchdog-error.png b/misc/watchdog-error.png
index f7e60e5238ee..db05365aa51c 100644
Binary files a/misc/watchdog-error.png and b/misc/watchdog-error.png differ
diff --git a/misc/watchdog-ok.png b/misc/watchdog-ok.png
index 6ebea3e53d5f..1d7baa06e2d0 100644
Binary files a/misc/watchdog-ok.png and b/misc/watchdog-ok.png differ
diff --git a/misc/watchdog-warning.png b/misc/watchdog-warning.png
index 5d33a512ee78..d8dced8890f2 100644
Binary files a/misc/watchdog-warning.png and b/misc/watchdog-warning.png differ
diff --git a/modules/simpletest/simpletest.pages.inc b/modules/simpletest/simpletest.pages.inc
index 732d6418cbe4..31d0b2ce773b 100644
--- a/modules/simpletest/simpletest.pages.inc
+++ b/modules/simpletest/simpletest.pages.inc
@@ -82,8 +82,8 @@ function theme_simpletest_test_table($variables) {
   // Define the images used to expand/collapse the test groups.
   $js = array(
     'images' => array(
-      theme('image', array('path' => 'misc/menu-collapsed.png', 'alt' => t('Expand'), 'title' => t('Expand'))) . ' <a href="#" class="simpletest-collapse">(' . t('Expand') . ')</a>',
-      theme('image', array('path' => 'misc/menu-expanded.png', 'alt' => t('Collapse'), 'title' => t('Collapse'))) . ' <a href="#" class="simpletest-collapse">(' . t('Collapse') . ')</a>',
+      theme('image', array('path' => 'misc/menu-collapsed.png', 'width' => 7, 'height' => 7, 'alt' => t('Expand'), 'title' => t('Expand'))) . ' <a href="#" class="simpletest-collapse">(' . t('Expand') . ')</a>',
+      theme('image', array('path' => 'misc/menu-expanded.png', 'width' => 7, 'height' => 7, 'alt' => t('Collapse'), 'title' => t('Collapse'))) . ' <a href="#" class="simpletest-collapse">(' . t('Collapse') . ')</a>',
     ),
   );
 
@@ -426,10 +426,10 @@ function simpletest_result_status_image($status) {
 
   if (!isset($map)) {
     $map = array(
-      'pass' => theme('image', array('path' => 'misc/watchdog-ok.png', 'alt' => t('Pass'))),
-      'fail' => theme('image', array('path' => 'misc/watchdog-error.png', 'alt' => t('Fail'))),
-      'exception' => theme('image', array('path' => 'misc/watchdog-warning.png', 'alt' => t('Exception'))),
-      'debug' => theme('image', array('path' => 'misc/watchdog-warning.png', 'alt' => t('Debug'))),
+      'pass' => theme('image', array('path' => 'misc/watchdog-ok.png', 'width' => 18, 'height' => 18, 'alt' => t('Pass'))),
+      'fail' => theme('image', array('path' => 'misc/watchdog-error.png', 'width' => 18, 'height' => 18, 'alt' => t('Fail'))),
+      'exception' => theme('image', array('path' => 'misc/watchdog-warning.png', 'width' => 18, 'height' => 18, 'alt' => t('Exception'))),
+      'debug' => theme('image', array('path' => 'misc/watchdog-warning.png', 'width' => 18, 'height' => 18, 'alt' => t('Debug'))),
     );
   }
   if (isset($map[$status])) {
diff --git a/modules/update/update.report.inc b/modules/update/update.report.inc
index 8e9dbae43d69..3f5933acb1fe 100644
--- a/modules/update/update.report.inc
+++ b/modules/update/update.report.inc
@@ -57,25 +57,25 @@ function theme_update_report($variables) {
     switch ($project['status']) {
       case UPDATE_CURRENT:
         $class = 'ok';
-        $icon = theme('image', array('path' => 'misc/watchdog-ok.png', 'alt' => t('ok'), 'title' => t('ok')));
+        $icon = theme('image', array('path' => 'misc/watchdog-ok.png', 'width' => 18, 'height' => 18, 'alt' => t('ok'), 'title' => t('ok')));
         break;
       case UPDATE_UNKNOWN:
       case UPDATE_FETCH_PENDING:
       case UPDATE_NOT_FETCHED:
         $class = 'unknown';
-        $icon = theme('image', array('path' => 'misc/watchdog-warning.png', 'alt' => t('warning'), 'title' => t('warning')));
+        $icon = theme('image', array('path' => 'misc/watchdog-warning.png', 'width' => 18, 'height' => 18, 'alt' => t('warning'), 'title' => t('warning')));
         break;
       case UPDATE_NOT_SECURE:
       case UPDATE_REVOKED:
       case UPDATE_NOT_SUPPORTED:
         $class = 'error';
-        $icon = theme('image', array('path' => 'misc/watchdog-error.png', 'alt' => t('error'), 'title' => t('error')));
+        $icon = theme('image', array('path' => 'misc/watchdog-error.png', 'width' => 18, 'height' => 18, 'alt' => t('error'), 'title' => t('error')));
         break;
       case UPDATE_NOT_CHECKED:
       case UPDATE_NOT_CURRENT:
       default:
         $class = 'warning';
-        $icon = theme('image', array('path' => 'misc/watchdog-warning.png', 'alt' => t('warning'), 'title' => t('warning')));
+        $icon = theme('image', array('path' => 'misc/watchdog-warning.png', 'width' => 18, 'height' => 18, 'alt' => t('warning'), 'title' => t('warning')));
         break;
     }
 
diff --git a/themes/seven/template.php b/themes/seven/template.php
index 5be459bea6f9..4582749b1d0a 100644
--- a/themes/seven/template.php
+++ b/themes/seven/template.php
@@ -88,10 +88,10 @@ function seven_tablesort_indicator($variables) {
   $style = $variables['style'];
   $theme_path = drupal_get_path('theme', 'seven');
   if ($style == 'asc') {
-    return theme('image', array('path' => $theme_path . '/images/arrow-asc.png', 'alt' => t('sort ascending'), 'title' => t('sort ascending')));
+    return theme('image', array('path' => $theme_path . '/images/arrow-asc.png', 'alt' => t('sort ascending'), 'width' => 13, 'height' => 13, 'title' => t('sort ascending')));
   }
   else {
-    return theme('image', array('path' => $theme_path . '/images/arrow-desc.png', 'alt' => t('sort descending'), 'title' => t('sort descending')));
+    return theme('image', array('path' => $theme_path . '/images/arrow-desc.png', 'alt' => t('sort descending'), 'width' => 13, 'height' => 13, 'title' => t('sort descending')));
   }
 }