diff --git a/common/src/main/java/io/netty/util/internal/SystemPropertyUtil.java b/common/src/main/java/io/netty/util/internal/SystemPropertyUtil.java
index 16cd1faa37..5f20b2e563 100644
--- a/common/src/main/java/io/netty/util/internal/SystemPropertyUtil.java
+++ b/common/src/main/java/io/netty/util/internal/SystemPropertyUtil.java
@@ -20,8 +20,6 @@ import io.netty.util.internal.logging.InternalLoggerFactory;
 
 import java.security.AccessController;
 import java.security.PrivilegedAction;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 import java.util.regex.Pattern;
 
 /**
@@ -29,15 +27,7 @@ import java.util.regex.Pattern;
  */
 public final class SystemPropertyUtil {
 
-    private static boolean initializedLogger;
-    private static final InternalLogger logger;
-    private static boolean loggedException;
-
-    static {
-        initializedLogger = false;
-        logger = InternalLoggerFactory.getInstance(SystemPropertyUtil.class);
-        initializedLogger = true;
-    }
+    private static final InternalLogger logger = InternalLoggerFactory.getInstance(SystemPropertyUtil.class);
 
     /**
      * Returns {@code true} if and only if the system property with the specified {@code key}
@@ -87,10 +77,7 @@ public final class SystemPropertyUtil {
                 });
             }
         } catch (Exception e) {
-            if (!loggedException) {
-                log("Unable to retrieve a system property '" + key + "'; default values will be used.", e);
-                loggedException = true;
-            }
+            logger.warn("Unable to retrieve a system property '{}'; default values will be used.", key, e);
         }
 
         if (value == null) {
@@ -128,9 +115,10 @@ public final class SystemPropertyUtil {
             return false;
         }
 
-        log(
-                "Unable to parse the boolean system property '" + key + "':" + value + " - " +
-                        "using the default value: " + def);
+        logger.warn(
+                "Unable to parse the boolean system property '{}':{} - using the default value: {}",
+                key, value, def
+        );
 
         return def;
     }
@@ -161,9 +149,10 @@ public final class SystemPropertyUtil {
             }
         }
 
-        log(
-                "Unable to parse the integer system property '" + key + "':" + value + " - " +
-                        "using the default value: " + def);
+        logger.warn(
+                "Unable to parse the integer system property '{}':{} - using the default value: {}",
+                key, value, def
+        );
 
         return def;
     }
@@ -192,31 +181,14 @@ public final class SystemPropertyUtil {
             }
         }
 
-        log(
-                "Unable to parse the long integer system property '" + key + "':" + value + " - " +
-                        "using the default value: " + def);
+        logger.warn(
+                "Unable to parse the long integer system property '{}':{} - using the default value: {}",
+                key, value, def
+        );
 
         return def;
     }
 
-    private static void log(String msg) {
-        if (initializedLogger) {
-            logger.warn(msg);
-        } else {
-            // Use JDK logging if logger was not initialized yet.
-            Logger.getLogger(SystemPropertyUtil.class.getName()).log(Level.WARNING, msg);
-        }
-    }
-
-    private static void log(String msg, Exception e) {
-        if (initializedLogger) {
-            logger.warn(msg, e);
-        } else {
-            // Use JDK logging if logger was not initialized yet.
-            Logger.getLogger(SystemPropertyUtil.class.getName()).log(Level.WARNING, msg, e);
-        }
-    }
-
     private SystemPropertyUtil() {
         // Unused
     }