diff --git a/core/src/main/java/tech/tablesaw/io/TypeUtils.java b/core/src/main/java/tech/tablesaw/io/TypeUtils.java
index 72b7a178a..0767146ff 100644
--- a/core/src/main/java/tech/tablesaw/io/TypeUtils.java
+++ b/core/src/main/java/tech/tablesaw/io/TypeUtils.java
@@ -33,7 +33,7 @@ public final class TypeUtils {
   // No default missing indicators
   // TODO: Allow this to be configurable?
   public static final ImmutableList<String> MISSING_INDICATORS =
-      ImmutableList.of(missingInd1, missingInd2, missingInd4, missingInd5);
+      ImmutableList.of(missingInd1, missingInd2, missingInd3, missingInd4, missingInd5);
 
   /** Private constructor to prevent instantiation */
   private TypeUtils() {}