diff --git a/.eslintrc.js b/.eslintrc.js
index 337b869..dc046e0 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -30,5 +30,6 @@ module.exports = {
     'prefer-destructuring': 0,
     'quote-props': 0,
     'semi': ['error', 'never'],
+    'symbol-description': 0,
   },
 };
diff --git a/src/puzzles/dodecaminx/dodecaminx.ts b/src/puzzles/dodecaminx/dodecaminx.ts
index 14233b7..adc678f 100644
--- a/src/puzzles/dodecaminx/dodecaminx.ts
+++ b/src/puzzles/dodecaminx/dodecaminx.ts
@@ -65,8 +65,10 @@ export class Dodecaminx extends Puzzle<DodecaminxOptions, DodecaminxState, Dodec
    * @param {Partial<DodecaminxStateSimple>} state state to apply to the puzzle
    */
   apply(state: Partial<DodecaminxStateSimple>) {
+    const symbol = Symbol()
+
     keys(state).forEach(face => {
-      const [corners, middles, center] = state[face]
+      const [corners, middles, center = symbol] = state[face]
 
       corners.forEach((matrix, i) => {
         matrix.forEach((value, j) => {
@@ -83,7 +85,7 @@ export class Dodecaminx extends Puzzle<DodecaminxOptions, DodecaminxState, Dodec
           })
         }
 
-        if (center) {
+        if (center !== symbol) {
           this.state[face][2].value = center
         }
       }
diff --git a/tests/puzzles/dodecaminx.spec.ts b/tests/puzzles/dodecaminx.spec.ts
index a7e4afb..128dfc0 100644
--- a/tests/puzzles/dodecaminx.spec.ts
+++ b/tests/puzzles/dodecaminx.spec.ts
@@ -3,28 +3,46 @@ import dodecaminxNotation from './dodecaminx-notation'
 import dodecaminxTurns from './dodecaminx-turns'
 
 describe('Dodecaminx', () => {
-  it('apply', () => {
-    const model = new Dodecaminx({ size: 3 })
+  describe('apply', () => {
+    it('fills face values', () => {
+      const model = new Dodecaminx({ size: 3 })
 
-    model.apply({
-      f: [
-        [[-1], [-2], [-3], [-4], [-5]],
-        [[-6], [-7], [-8], [-9], [-10]],
-        -11,
-      ],
+      model.apply({
+        f: [
+          [[-1], [-2], [-3], [-4], [-5]],
+          [[-6], [-7], [-8], [-9], [-10]],
+          -11,
+        ],
+      })
+
+      expect(model.state.f[0][0][0].value).toBe(-1)
+      expect(model.state.f[0][1][0].value).toBe(-2)
+      expect(model.state.f[0][2][0].value).toBe(-3)
+      expect(model.state.f[0][3][0].value).toBe(-4)
+      expect(model.state.f[0][4][0].value).toBe(-5)
+      expect(model.state.f[1][0][0].value).toBe(-6)
+      expect(model.state.f[1][1][0].value).toBe(-7)
+      expect(model.state.f[1][2][0].value).toBe(-8)
+      expect(model.state.f[1][3][0].value).toBe(-9)
+      expect(model.state.f[1][4][0].value).toBe(-10)
+      expect(model.state.f[2].value).toBe(-11)
     })
 
-    expect(model.state.f[0][0][0].value).toBe(-1)
-    expect(model.state.f[0][1][0].value).toBe(-2)
-    expect(model.state.f[0][2][0].value).toBe(-3)
-    expect(model.state.f[0][3][0].value).toBe(-4)
-    expect(model.state.f[0][4][0].value).toBe(-5)
-    expect(model.state.f[1][0][0].value).toBe(-6)
-    expect(model.state.f[1][1][0].value).toBe(-7)
-    expect(model.state.f[1][2][0].value).toBe(-8)
-    expect(model.state.f[1][3][0].value).toBe(-9)
-    expect(model.state.f[1][4][0].value).toBe(-10)
-    expect(model.state.f[2].value).toBe(-11)
+    it('can apply falsey center values', () => {
+      const model = new Dodecaminx({ size: 3 })
+
+      expect(model.state.b[2].value).not.toBe(null)
+
+      model.apply({
+        b: [
+          [[null], [null], [null], [null], [null]],
+          [[null], [null], [null], [null], [null]],
+          null,
+        ],
+      })
+
+      expect(model.state.b[2].value).toBe(null)
+    })
   })
 
   it('clone', () => {