diff --git a/spark/v3.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteConf.java b/spark/v3.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteConf.java
index 08b3fbee7590..5e007bdebcbe 100644
--- a/spark/v3.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteConf.java
+++ b/spark/v3.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteConf.java
@@ -99,7 +99,7 @@ public boolean handleTimestampWithoutZone() {
   }
 
   public String overwriteMode() {
-    String overwriteMode = writeOptions.get("overwrite-mode");
+    String overwriteMode = writeOptions.get(SparkWriteOptions.OVERWRITE_MODE);
     return overwriteMode != null ? overwriteMode.toLowerCase(Locale.ROOT) : null;
   }
 
diff --git a/spark/v3.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteOptions.java b/spark/v3.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteOptions.java
index 0ba435ae7429..ef25f871aed7 100644
--- a/spark/v3.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteOptions.java
+++ b/spark/v3.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteOptions.java
@@ -50,4 +50,6 @@ private SparkWriteOptions() {}
   // Controls whether to allow writing timestamps without zone info
   public static final String HANDLE_TIMESTAMP_WITHOUT_TIMEZONE =
       "handle-timestamp-without-timezone";
+
+  public static final String OVERWRITE_MODE = "overwrite-mode";
 }