diff --git a/logger/src/main/java/com/orhanobut/logger/PrettyFormatStrategy.java b/logger/src/main/java/com/orhanobut/logger/PrettyFormatStrategy.java
index 74e33ad5..c3882656 100644
--- a/logger/src/main/java/com/orhanobut/logger/PrettyFormatStrategy.java
+++ b/logger/src/main/java/com/orhanobut/logger/PrettyFormatStrategy.java
@@ -180,7 +180,7 @@ private void logChunk(int priority, @Nullable String tag, @NonNull String chunk)
   private String getSimpleClassName(@NonNull String name) {
     checkNotNull(name);
 
-    int lastIndex = name.lastIndexOf(".");
+    int lastIndex = name.lastIndexOf('.');
     return name.substring(lastIndex + 1);
   }