diff --git a/htroot/ConfigUpdate_p.java b/htroot/ConfigUpdate_p.java
index a418285d1..1ff816b98 100644
--- a/htroot/ConfigUpdate_p.java
+++ b/htroot/ConfigUpdate_p.java
@@ -178,7 +178,7 @@ public class ConfigUpdate_p {
                 // not a valid release
             	// can be also a restart- or deploy-file
                 final File invalid = downloaded;
-                if (!(invalid.getName().endsWith(".bat") || invalid.getName().endsWith(".sh"))) { // Windows & Linux don't like deleted scripts while execution!
+                if (!(invalid.getName().endsWith(".bat") || invalid.getName().endsWith(".sh") || invalid.getName().endsWith(".sig"))) { // Windows & Linux don't like deleted scripts while execution!
                     invalid.deleteOnExit();
                 }
             }
diff --git a/source/de/anomic/yacy/yacyRelease.java b/source/de/anomic/yacy/yacyRelease.java
index c65e53f77..8805b8542 100644
--- a/source/de/anomic/yacy/yacyRelease.java
+++ b/source/de/anomic/yacy/yacyRelease.java
@@ -616,6 +616,7 @@ public final class yacyRelease extends yacyVersion {
                 if (now - downloadedFile.lastModified() > deleteAfterMillis) {
                     // delete file
                     FileUtils.deletedelete(downloadedFile);
+                    FileUtils.deletedelete(new File(downloadedFile.getAbsolutePath() + ".sig"));
                     if (downloadedFile.exists()) {
                         Log.logWarning("STARTUP", "cannot delete old release " + downloadedFile.getAbsolutePath());
                     }