diff --git a/tools/binman/control.py b/tools/binman/control.py
index e170aea..ce57dc7 100644
--- a/tools/binman/control.py
+++ b/tools/binman/control.py
@@ -303,7 +303,7 @@
 
     # If repacking, drop the old offset/size values except for the original
     # ones, so we are only left with the constraints.
-    if allow_resize:
+    if image.allow_repack and allow_resize:
         image.ResetForPack()
 
 
diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index 03e6d92..c9a8209 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -5592,6 +5592,27 @@
         finally:
             shutil.rmtree(tmpdir)
 
+    def testReplaceResizeNoRepackSameSize(self):
+        """Test replacing entries with same-size data without repacking"""
+        expected = b'x' * len(U_BOOT_DATA)
+        data, expected_fdtmap, _ = self._RunReplaceCmd('u-boot', expected)
+        self.assertEqual(expected, data)
+
+        path, fdtmap = state.GetFdtContents('fdtmap')
+        self.assertIsNotNone(path)
+        self.assertEqual(expected_fdtmap, fdtmap)
+
+    def testReplaceResizeNoRepackSmallerSize(self):
+        """Test replacing entries with smaller-size data without repacking"""
+        new_data = b'x'
+        data, expected_fdtmap, _ = self._RunReplaceCmd('u-boot', new_data)
+        expected = new_data.ljust(len(U_BOOT_DATA), b'\0')
+        self.assertEqual(expected, data)
+
+        path, fdtmap = state.GetFdtContents('fdtmap')
+        self.assertIsNotNone(path)
+        self.assertEqual(expected_fdtmap, fdtmap)
+
 
 if __name__ == "__main__":
     unittest.main()