diff --git a/src/main/java/org/apache/commons/lang3/text/StrLookup.java b/src/main/java/org/apache/commons/lang3/text/StrLookup.java
index c4d42b3ee..e1f6db144 100644
--- a/src/main/java/org/apache/commons/lang3/text/StrLookup.java
+++ b/src/main/java/org/apache/commons/lang3/text/StrLookup.java
@@ -96,7 +96,7 @@ public abstract class StrLookup<V> {
         }
 
         Properties properties = copyProperties(systemProperties);
-        @SuppressWarnings("unchecked") // System property keys and values are always Strings
+        @SuppressWarnings({ "unchecked", "rawtypes" }) // System property keys and values are always Strings
         final Map<String, String> propertiesMap = (Map) properties;
 
         return new MapStrLookup<String>(propertiesMap);