diff --git a/scm-core/src/main/java/sonia/scm/repository/spi/ModifyWorkerHelper.java b/scm-core/src/main/java/sonia/scm/repository/spi/ModifyWorkerHelper.java
index 875e06334a..fe19523261 100644
--- a/scm-core/src/main/java/sonia/scm/repository/spi/ModifyWorkerHelper.java
+++ b/scm-core/src/main/java/sonia/scm/repository/spi/ModifyWorkerHelper.java
@@ -12,13 +12,8 @@ import java.nio.file.FileAlreadyExistsException;
 import java.nio.file.Files;
 import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
-import java.nio.file.attribute.PosixFilePermission;
-import java.util.Optional;
-import java.util.Set;
 
 import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
-import static java.util.Optional.empty;
-import static java.util.Optional.of;
 import static sonia.scm.AlreadyExistsException.alreadyExists;
 import static sonia.scm.ContextEntry.ContextBuilder.entity;
 import static sonia.scm.NotFoundException.notFound;
@@ -66,34 +61,14 @@ public interface ModifyWorkerHelper extends ModifyCommand.Worker {
     if (!targetFile.toFile().exists()) {
       throw notFound(createFileContext(path));
     }
-    Optional<Set<PosixFilePermission>> posixFilePermissions = getPosixFilePermissions(targetFile);
+    boolean executable = Files.isExecutable(targetFile);
     Files.move(file.toPath(), targetFile, REPLACE_EXISTING);
-    posixFilePermissions.ifPresent(permissions -> setPosixFilePermissions(targetFile, permissions));
+    if (targetFile.toFile().setExecutable(executable)) {
+      LOG.warn("could not set executable flag for file {}", targetFile);
+    }
     addFileToScm(path, targetFile);
   }
 
-  default Optional<Set<PosixFilePermission>> getPosixFilePermissions(Path targetFile) {
-    try {
-      return of(Files.getPosixFilePermissions(targetFile));
-    } catch (UnsupportedOperationException e) {
-      LOG.trace("posix file permissions not supported");
-      return empty();
-    } catch (IOException e) {
-      LOG.info("could not read posix file permissions for file {}", targetFile);
-      return empty();
-    }
-  }
-
-  default void setPosixFilePermissions(Path targetFile, Set<PosixFilePermission> permissions) {
-    try {
-      Files.setPosixFilePermissions(targetFile, permissions);
-    } catch (UnsupportedOperationException e) {
-      LOG.trace("posix file permissions not supported");
-    } catch (IOException e) {
-      LOG.info("could not write posix file permissions to file {}", targetFile);
-    }
-  }
-
   void addFileToScm(String name, Path file);
 
   default ContextEntry.ContextBuilder createFileContext(String path) {
diff --git a/scm-core/src/test/java/sonia/scm/repository/spi/ModifyWorkerHelperTest.java b/scm-core/src/test/java/sonia/scm/repository/spi/ModifyWorkerHelperTest.java
index c2996429a1..1455b300d2 100644
--- a/scm-core/src/test/java/sonia/scm/repository/spi/ModifyWorkerHelperTest.java
+++ b/scm-core/src/test/java/sonia/scm/repository/spi/ModifyWorkerHelperTest.java
@@ -1,7 +1,5 @@
 package sonia.scm.repository.spi;
 
-import com.google.common.collect.ImmutableSet;
-import org.assertj.core.api.Assumptions;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.junitpioneer.jupiter.TempDirectory;
@@ -10,16 +8,8 @@ import sonia.scm.repository.Repository;
 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
-import java.nio.file.Files;
 import java.nio.file.Path;
 
-import static java.nio.file.attribute.PosixFilePermission.GROUP_EXECUTE;
-import static java.nio.file.attribute.PosixFilePermission.GROUP_READ;
-import static java.nio.file.attribute.PosixFilePermission.OTHERS_EXECUTE;
-import static java.nio.file.attribute.PosixFilePermission.OTHERS_READ;
-import static java.nio.file.attribute.PosixFilePermission.OWNER_EXECUTE;
-import static java.nio.file.attribute.PosixFilePermission.OWNER_READ;
-import static java.nio.file.attribute.PosixFilePermission.OWNER_WRITE;
 import static org.assertj.core.api.Assertions.assertThat;
 
 @ExtendWith(TempDirectory.class)
@@ -31,19 +21,13 @@ class ModifyWorkerHelperTest {
     File target = createFile(temp, "executable.sh");
     File newFile = createFile(temp, "other");
 
-    Assumptions.assumeThatThrownBy(() -> {
-      Files.setPosixFilePermissions(target.toPath(),
-        ImmutableSet.of(OWNER_READ, OWNER_WRITE, OWNER_EXECUTE, GROUP_READ, GROUP_EXECUTE, OTHERS_READ, OTHERS_EXECUTE));
-      Files.setPosixFilePermissions(newFile.toPath(),
-        ImmutableSet.of(OWNER_READ, OWNER_WRITE, GROUP_READ, OTHERS_READ));
-    }).doesNotThrowAnyException(); // ignore this test on systems that does not support posix file permissions
+    target.setExecutable(true);
 
     ModifyWorkerHelper helper = new MinimalModifyWorkerHelper(temp);
 
     helper.modify("executable.sh", newFile);
 
-    assertThat(Files.getPosixFilePermissions(target.toPath()))
-      .contains(OWNER_READ, OWNER_WRITE, OWNER_EXECUTE, GROUP_READ, GROUP_EXECUTE, OTHERS_READ, OTHERS_EXECUTE);
+    assertThat(target.canExecute()).isTrue();
   }
 
   private File createFile(Path temp, String fileName) throws IOException {