diff --git a/Source/svg/SVGParser.swift b/Source/svg/SVGParser.swift
index 5bb08a77..f59baeb3 100644
--- a/Source/svg/SVGParser.swift
+++ b/Source/svg/SVGParser.swift
@@ -1649,12 +1649,12 @@ open class SVGParser {
     }
 
     fileprivate func dimensionFromString(_ string: String) -> SVGLength? {
+        if string.hasSuffix("%"), let value = Double(string.dropLast()) {
+            return SVGLength(percent: value)
+        }
         if let value = doubleFromString(string) {
             return SVGLength(pixels: value)
         }
-        if string.hasSuffix("%") {
-            return SVGLength(percent: Double(string.dropLast())!)
-        }
         return .none
     }