diff --git a/src/client/TerritoryPatterns.ts b/src/client/TerritoryPatterns.ts
index 4ab7a1b43..6c2012e85 100644
--- a/src/client/TerritoryPatterns.ts
+++ b/src/client/TerritoryPatterns.ts
@@ -63,6 +63,7 @@ export class PatternDecoder {
 
 export class TerritoryPatternStorage {
   private static readonly KEY = "territoryPattern";
+  private static readonly BASE64_KEY = "territoryPatternBase64";
 
   static getSelectedPattern(): string | undefined {
     return localStorage.getItem(TerritoryPatternStorage.KEY) ?? undefined;
@@ -71,4 +72,14 @@ export class TerritoryPatternStorage {
   static setSelectedPattern(patternKey: string): void {
     localStorage.setItem(TerritoryPatternStorage.KEY, patternKey);
   }
+
+  static getSelectedPatternBase64(): string | undefined {
+    return (
+      localStorage.getItem(TerritoryPatternStorage.BASE64_KEY) ?? undefined
+    );
+  }
+
+  static setSelectedPatternBase64(base64: string): void {
+    localStorage.setItem(TerritoryPatternStorage.BASE64_KEY, base64);
+  }
 }
diff --git a/src/client/TerritoryPatternsModal.ts b/src/client/TerritoryPatternsModal.ts
index 7be39c93e..61d99e698 100644
--- a/src/client/TerritoryPatternsModal.ts
+++ b/src/client/TerritoryPatternsModal.ts
@@ -179,6 +179,10 @@ export class territoryPatternsModal extends LitElement {
   private selectPattern(patternKey: string) {
     this.selectedPattern = patternKey;
     TerritoryPatternStorage.setSelectedPattern(patternKey);
+    const base64 = territoryPatterns[patternKey];
+    if (base64) {
+      TerritoryPatternStorage.setSelectedPatternBase64(base64);
+    }
     this.updatePreview();
     this.close();
   }