diff --git a/logback-core/src/main/java/ch/qos/logback/core/rolling/RollingFileAppender.java b/logback-core/src/main/java/ch/qos/logback/core/rolling/RollingFileAppender.java
index 94770ff15e..0a119cb350 100755
--- a/logback-core/src/main/java/ch/qos/logback/core/rolling/RollingFileAppender.java
+++ b/logback-core/src/main/java/ch/qos/logback/core/rolling/RollingFileAppender.java
@@ -145,7 +145,7 @@ private boolean innerCheckForFileNamePatternCollisionInPreviousRFA(FileNamePatte
             }
         }
         if (name != null) {
-            map.put(getName(), fileNamePattern);
+            map.put(name, fileNamePattern);
         }
         return collisionsDetected;
     }