diff --git a/src/index.ts b/src/index.ts
index 2023945715202daf6d3696442b79237f8050baab..203cc1b5b3a603ec68536b0a553d969c5abd5b1e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -100,15 +100,16 @@ async function run(inputDir: string, outputDir: string, options: CliOptions) {
                     const tOrder = { P: 0, F: 1, B: 2 };
 
                     function getNum(x: Resolution) {
-                        return parseInt(x.number.match(/^\d+/)?.[0], 10);
+                        return parseInt(
+                            x.number.match(/\.(\d+)[PFB]?$/)?.[1],
+                            10,
+                        );
                     }
 
                     // This works because `0` and `NaN` are falsy. :)
                     return (
-                        tOrder[b.type] - tOrder[a.type]
-                        || getNum(b) - getNum(a)
-                        || b.number.localeCompare(a.number)
-                    ); // Invalid number format
+                        tOrder[b.type] - tOrder[a.type] || getNum(b) - getNum(a)
+                    );
                 }),
             },
         }));