diff --git a/src/element/textElement.test.ts b/src/element/textElement.test.ts
index aa7df8ee..106ed7be 100644
--- a/src/element/textElement.test.ts
+++ b/src/element/textElement.test.ts
@@ -332,6 +332,12 @@ describe("Test getDefaultLineHeight", () => {
     //@ts-ignore
     expect(getDefaultLineHeight()).toBe(1.25);
   });
+
+  it("should return line height using default font family for unknown font", () => {
+    const UNKNOWN_FONT = 5;
+    expect(getDefaultLineHeight(UNKNOWN_FONT)).toBe(1.25);
+  });
+
   it("should return correct line height", () => {
     expect(getDefaultLineHeight(FONT_FAMILY.Cascadia)).toBe(1.2);
   });
diff --git a/src/element/textElement.ts b/src/element/textElement.ts
index fd501c14..8b397913 100644
--- a/src/element/textElement.ts
+++ b/src/element/textElement.ts
@@ -887,7 +887,7 @@ const DEFAULT_LINE_HEIGHT = {
 };
 
 export const getDefaultLineHeight = (fontFamily: FontFamilyValues) => {
-  if (fontFamily) {
+  if (fontFamily in DEFAULT_LINE_HEIGHT) {
     return DEFAULT_LINE_HEIGHT[fontFamily];
   }
   return DEFAULT_LINE_HEIGHT[DEFAULT_FONT_FAMILY];