diff --git a/src/syllable.ts b/src/syllable.ts
index 991de4b..4e43646 100644
--- a/src/syllable.ts
+++ b/src/syllable.ts
@@ -317,7 +317,7 @@ export class Syllable extends Node<Syllable> {
       return this.#cachedStructureWithGemination;
     }
 
-    if (this.#cachedStructure) {
+    if (!withGemination && this.#cachedStructure) {
       return this.#cachedStructure;
     }
 
diff --git a/test/syllable.test.ts b/test/syllable.test.ts
index 87823e9..c3c07b8 100644
--- a/test/syllable.test.ts
+++ b/test/syllable.test.ts
@@ -100,6 +100,29 @@ describe.each`
   });
 });
 
+describe("structure cache", () => {
+  const str = "סַפִּ֖יר";
+  test("without gemination", () => {
+    const heb = new Text(str);
+    const syllable = heb.syllables[0];
+    // first call to structure() will cache the result
+    // but use the opposite of what is being tested
+    syllable.structure(true);
+    const [syllableOnset, syllableNucleus, syllableCoda] = ["ס", "ַ", ""];
+    expect(syllable.structure()).toEqual([syllableOnset, syllableNucleus, syllableCoda]);
+  });
+
+  test("with gemination", () => {
+    const heb = new Text(str);
+    const syllable = heb.syllables[0];
+    // first call to structure() will cache the result
+    // but use the opposite of what is being tested
+    syllable.structure();
+    const [syllableOnset, syllableNucleus, syllableCoda] = ["ס", "ַ", "פּ"];
+    expect(syllable.structure(true)).toEqual([syllableOnset, syllableNucleus, syllableCoda]);
+  });
+});
+
 describe.each`
   description                     | hebrew              | syllableNum | vowel                 | allowNoNiqqud
   ${"syllable with patah"}        | ${"הַֽ֭יְחָבְרְךָ"} | ${0}        | ${"\u{05B7}"}         | ${false}