diff --git a/src/main/java/org/apache/maven/shared/filtering/FilteringUtils.java b/src/main/java/org/apache/maven/shared/filtering/FilteringUtils.java
index aa12a5e..21b9aff 100644
--- a/src/main/java/org/apache/maven/shared/filtering/FilteringUtils.java
+++ b/src/main/java/org/apache/maven/shared/filtering/FilteringUtils.java
@@ -267,7 +267,7 @@ public final class FilteringUtils {
             }
         }
 
-        if (!relativePath.isEmpty() && toTokeniser.hasMoreTokens()) {
+        if (relativePath.length() != 0 && toTokeniser.hasMoreTokens()) {
             relativePath.append(separatorChar);
         }