diff --git a/phpBB/includes/acp/acp_icons.php b/phpBB/includes/acp/acp_icons.php
index 2220089231..7f10c73c37 100644
--- a/phpBB/includes/acp/acp_icons.php
+++ b/phpBB/includes/acp/acp_icons.php
@@ -113,11 +113,21 @@ class acp_icons
 							}
 						}
 					}
+					else
+					// getimagesize can't read the dimensions of the SVG files
+					// https://bugs.php.net/bug.php?id=71517
+					{
+						$xml_get = simplexml_load_file($phpbb_root_path . $img_path . '/' . $path . $img);
+
+						$svg_width = intval($xml_get['width']); 
+						$svg_height = intval($xml_get['height']);
+					}
 
 					$_images[$path . $img]['file'] = $path . $img;
 
-					$_images[$path . $img]['width'] = $img_size ? $img_size[0] : 127;
-					$_images[$path . $img]['height'] = $img_size ? $img_size[1] : 127;
+					// Give SVG a fallback on failure
+					$_images[$path . $img]['width'] = $img_size ? $img_size[0] : ($svg_width ?: 32);
+					$_images[$path . $img]['height'] = $img_size ? $img_size[1] : ($svg_height ?: 32);
 				}
 			}
 			unset($imglist);