diff --git a/lib/java/com/google/android/material/color/HarmonizedColorsOptions.java b/lib/java/com/google/android/material/color/HarmonizedColorsOptions.java
index 2b61603b900..f90a24d83a3 100644
--- a/lib/java/com/google/android/material/color/HarmonizedColorsOptions.java
+++ b/lib/java/com/google/android/material/color/HarmonizedColorsOptions.java
@@ -102,7 +102,7 @@ public Builder setColorResourceIds(@NonNull @ColorRes int[] colorResourceIds) {
      *
      * @param colorAttributes The {@link HarmonizedColorAttributes} that needs to be harmonized.
      */
-    @Nullable
+    @NonNull
     public Builder setColorAttributes(@Nullable HarmonizedColorAttributes colorAttributes) {
       this.colorAttributes = colorAttributes;
       return this;