diff --git a/src/main/org/apache/tools/ant/taskdefs/Get.java b/src/main/org/apache/tools/ant/taskdefs/Get.java
index 1f0c2c330..1fad15a4f 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Get.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Get.java
@@ -304,7 +304,7 @@ public class Get extends Task {
      * @param v "true" to enable file time fetching
      */
     public void setUseTimestamp(boolean v) {
-        if (JavaEnvUtils.isJavaVersion(JavaEnvUtils.JAVA_1_1)) {
+        if (!JavaEnvUtils.isJavaVersion(JavaEnvUtils.JAVA_1_1)) {
             useTimestamp = v;
         }
     }
diff --git a/src/main/org/apache/tools/ant/taskdefs/Touch.java b/src/main/org/apache/tools/ant/taskdefs/Touch.java
index ef20af943..cbb8b8f05 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Touch.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Touch.java
@@ -187,7 +187,7 @@ public class Touch extends Task {
         }
 
         if (millis >= 0 && 
-            !JavaEnvUtils.isJavaVersion(JavaEnvUtils.JAVA_1_1)) {
+            JavaEnvUtils.isJavaVersion(JavaEnvUtils.JAVA_1_1)) {
             log("modification time of files cannot be set in JDK 1.1",
                 Project.MSG_WARN);
             return;