diff --git a/common/web/types/src/ldml-keyboard/pattern-parser.ts b/common/web/types/src/ldml-keyboard/pattern-parser.ts
index b02440553e6..b0d6fb07962 100644
--- a/common/web/types/src/ldml-keyboard/pattern-parser.ts
+++ b/common/web/types/src/ldml-keyboard/pattern-parser.ts
@@ -64,9 +64,15 @@ export class MarkerParser {
   public static readonly MAX_MARKER_INDEX = constants.marker_max_index;
   /** Max count of markers */
   public static readonly MAX_MARKER_COUNT = constants.marker_max_count;
+
+  private static anyMarkerMatch() : string {
+    const start = (`0000` + (this.MIN_MARKER_INDEX).toString(16)).slice(-4);
+    const end   = (`0000` + (this.MAX_MARKER_INDEX).toString(16)).slice(-4);
+    return `${this.SENTINEL}${this.MARKER_CODE}[\\u${start}-\\u${end}]`;
+  }
+
   /** Expression that matches any marker */
-  public static readonly ANY_MARKER_MATCH =
-    this.SENTINEL + this.MARKER_CODE + `[\\u0001-\\u${this.MAX_MARKER_INDEX.toString(16)}]`;
+  public static readonly ANY_MARKER_MATCH = MarkerParser.anyMarkerMatch();
 
   /**
    * Pattern for matching a marker reference, OR the special marker \m{.}
diff --git a/common/web/types/test/ldml-keyboard/test-pattern-parser.ts b/common/web/types/test/ldml-keyboard/test-pattern-parser.ts
index 1ea96797a7b..0274f2a5c27 100644
--- a/common/web/types/test/ldml-keyboard/test-pattern-parser.ts
+++ b/common/web/types/test/ldml-keyboard/test-pattern-parser.ts
@@ -105,16 +105,20 @@ describe('Test of Pattern Parsers', () => {
         )
       );
       // verify the matching behavior of these
-      assert.isTrue(new RegExp(MarkerParser.toSentinelString(`Q\\m{a}`, markers, true), 'u')
+      assert.isTrue(new RegExp(MarkerParser.toSentinelString(`^Q\\m{a}$`, markers, true), 'u')
         .test(MarkerParser.toSentinelString(`Q\\m{a}`, markers, false)), `Q\\m{a} did not match`);
-      assert.isFalse(new RegExp(MarkerParser.toSentinelString(`Q\\m{a}`, markers, true), 'u')
+      assert.isFalse(new RegExp(MarkerParser.toSentinelString(`^Q\\m{a}$`, markers, true), 'u')
         .test(MarkerParser.toSentinelString(`Q\\m{b}`, markers, false)), `Q\\m{a} should not match Q\\m{b}`);
-      assert.isTrue(new RegExp(MarkerParser.toSentinelString(`Q\\m{.}`, markers, true), 'u')
+      assert.isTrue(new RegExp(MarkerParser.toSentinelString(`^Q\\m{.}$`, markers, true), 'u')
         .test(MarkerParser.toSentinelString(`Q\\m{a}`, markers, false)), `Q\\m{.} did not match Q\\m{a}`);
-      assert.isTrue(new RegExp(MarkerParser.toSentinelString(`Q\\m{.}`, markers, true), 'u')
+      assert.isTrue(new RegExp(MarkerParser.toSentinelString(`^Q\\m{.}$`, markers, true), 'u')
         .test(MarkerParser.toSentinelString(`Q\\m{zz}`, markers, false)), `Q\\m{.} did not match Q\\m{zz} (max marker)`);
-      assert.isFalse(new RegExp(MarkerParser.toSentinelString(`Q\\m{.}`, markers, true), 'u')
+      assert.isFalse(new RegExp(MarkerParser.toSentinelString(`^Q\\m{.}$`, markers, true), 'u')
         .test(MarkerParser.toSentinelString(`\\m{a}`, markers, false)), `Q\\m{.} did not match \\m{a}`);
+      assert.isTrue(new RegExp(MarkerParser.toSentinelString(`^\\m{.}$`, markers, true), 'u')
+        .test(MarkerParser.toSentinelString(`\\m{a}`, markers, false)), `\\m{.} did not match \\m{a}`);
+      assert.isFalse(new RegExp(MarkerParser.toSentinelString(`^\\m{.}$`, markers, true), 'u')
+        .test(MarkerParser.toSentinelString(`\\m{a}\\m{b}`, markers, false)), `\\m{.} did not match \\m{a}\\m{b}`);
     });
     it('should match some marker constants', () => {
       assert.equal(constants.uc_sentinel, KMXFile.UC_SENTINEL);