diff --git a/src/main/java/org/apache/commons/csv/CSVParser.java b/src/main/java/org/apache/commons/csv/CSVParser.java
index ece275a4..5d8ffabe 100644
--- a/src/main/java/org/apache/commons/csv/CSVParser.java
+++ b/src/main/java/org/apache/commons/csv/CSVParser.java
@@ -403,8 +403,7 @@ public final class CSVParser implements Iterable<CSVRecord>, Closeable {
                     final String header = headerRecord[i];
                     final boolean containsHeader = hdrMap.containsKey(header);
                     final boolean emptyHeader = header == null || header.trim().isEmpty();
-                    if (containsHeader &&
-                            (!emptyHeader || (emptyHeader && !this.format.getAllowMissingColumnNames()))) {
+                    if (containsHeader && (!emptyHeader || !this.format.getAllowMissingColumnNames())) {
                         throw new IllegalArgumentException("The header contains a duplicate name: \"" + header +
                                 "\" in " + Arrays.toString(headerRecord));
                     }