diff --git a/hutool-core/src/main/java/org/dromara/hutool/core/util/RandomUtil.java b/hutool-core/src/main/java/org/dromara/hutool/core/util/RandomUtil.java
index c1ac39c53..552a3cc38 100644
--- a/hutool-core/src/main/java/org/dromara/hutool/core/util/RandomUtil.java
+++ b/hutool-core/src/main/java/org/dromara/hutool/core/util/RandomUtil.java
@@ -249,7 +249,7 @@ public class RandomUtil {
 			min++;
 		}
 		if (includeMax) {
-			max--;
+			max++;
 		}
 		return getRandom().nextInt(min, max);
 	}
@@ -322,7 +322,7 @@ public class RandomUtil {
 			min++;
 		}
 		if (includeMax) {
-			max--;
+			max++;
 		}
 		return getRandom().nextLong(min, max);
 	}